693.932 PEOPLE
| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Heilmaier, Martin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (247/247 displayed)
- 2025Strategic alloy design and processing for improved mechanical response in the Mo-Si-Ti systemcitations
- 2025Strengthening mechanisms in Ni and Ni-5Fe alloycitations
- 2024Cover Picture: Materials and Corrosion. 12/2024
- 2024Strategic alloy design and processing for improved mechanical response in the Mo-Si-Ti system
- 2024One-step sputtering of MoSSe metastable phase as thin film and predicted thermodynamic stability by computational methods
- 2024One-step sputtering of MoSSe metastable phase as thin film and predicted thermodynamic stability by computational methodscitations
- 2024Creep behavior of a precipitation-strengthened A2-B2 refractory high entropy alloy
- 2024Hot corrosion behavior of Mo–Si–Ti alloys
- 2024Creep behavior and deformation mechanisms of precipitation-strengthened refractory high entropy alloys
- 2024Aluminide diffusion coatings for improving the pesting behavior of refractory metalscitations
- 2024On the inherent strength of Cr23C6 with the complex face-centered cubic D84 structurecitations
- 2024The effect of grain boundaries and precipitates on the mechanical behavior of the refractory compositionally complex alloy NbMoCrTiAlcitations
- 2023Softening by spinodal decomposition in Au–Cu–Ni–Pd–Pt high-entropy alloyscitations
- 2023Revisiting analytic shear-lag models for predicting creep in composite materials
- 2023Phase-Field Simulation of the Microstructure Evolution in the Eutectic Alloy NiAl-31Cr-3Mocitations
- 2023Chromium Diffusion Coatings for Mo-Based Silicides to Improve Their Oxidation Resistancecitations
- 2023Phasenumwandlungen zur systematischen Gefügeeinstellung mehrphasiger Ta-Mo-Ti-Cr-Al-Legierungen
- 2023Formation and thermal stability of two-phase microstructures in Al-containing refractory compositionally complex alloys
- 2023The Piezoresponse in WO3 Thin Films Due to N2-Filled Nanovoids Enrichment by Atom Probe Tomographycitations
- 2023Formation of rutile (Cr,Ta,Ti)O2 oxides during oxidation of refractory high entropy alloys in Ta-Mo-Cr-Ti-Al systemcitations
- 2023Nanoscale Oxide Formation at α‐Al<sub>2</sub>O<sub>3</sub>–Nb Interfacescitations
- 2023Plastic deformation of single crystals of the equiatomic Cr-Fe-Co-Ni medium entropy alloy – A comparison with Cr-Mn-Fe-Co-Ni and Cr-Co-Ni alloyscitations
- 2022Phase Continuity, Brittle to Ductile Transition Temperature, and Creep Behavior of a Eutectic Mo–20Si–52.8Ti Alloycitations
- 2022On the impact of the mesostructure on the creep response of cellular NiAl-Mo eutecticscitations
- 2022Improving the intermediate- and high-temperature strength of L12-Co3(Al,W) by Ni and Ta additionscitations
- 2022Role of orientation relationship for the formation of morphology and preferred orientation in NiAl-(Cr,Mo) during directional solidificationcitations
- 2022High‐Temperature Ternary Oxide Phases in Tantalum/Niobium–Alumina Composite Materialscitations
- 2022Formation and thermal stability of two-phase microstructures in Al-containing refractory compositionally complex alloyscitations
- 2022Revealing the Role of Cross Slip for Serrated Plastic Deformation in Concentrated Solid Solutions at Cryogenic Temperaturescitations
- 2022A novel nitridation- and pesting-resistant Cr-Si-Mo alloycitations
- 2022Coarse‐Grained Refractory Composite Castables Based on Alumina and Niobiumcitations
- 2022Pesting Resistance in High Mo Containing Alloys
- 2022High‐temperature ternary oxide phases in Ta/Nb‐Alumina composite materials
- 2022Micro-mechanical deformation behavior of CoCrFeMnNi high-entropy alloycitations
- 2022Improving the intermediate- and high-temperature strength of L1$_{2}$-Co$_{3}$(Al,W) by Ni and Ta additions
- 2022Comparison of the Internal Fatigue Crack Initiation and Propagation Behavior of a Quenched and Tempered Steel with and without a Thermomechanical Treatmentcitations
- 2022Dislocation-mediated and twinning-induced plasticity of CoCrFeMnNi in varying tribological loading scenarioscitations
- 2022Plastic deformation of bulk and micropillar single crystals of Mo₅Si₃ with the tetragonal D8$_{m}$ structure
- 2022On the formation of nanocrystalline aluminides during high pressure torsion of Al/Ni alternating foils and post-processing multilayer reactioncitations
- 2022Interface reactions of magnetron sputtered Si-based dual layer coating systems as oxidation protection for Mo-Si-Ti alloyscitations
- 2022Plastic deformation of bulk and micropillar single crystals of Mo5Si3 with the tetragonal D8 structurecitations
- 2022Solid solution strengthening in medium- to high-entropy alloyscitations
- 2022The electronic states of ITO–MoS<sub>2</sub>: Experiment and theorycitations
- 2022Materials properties characterization in the most extreme environmentscitations
- 2022Low-cycle fatigue deformation and damage behavior of equiatomic CoCrFeMnNi and CoCrNi alloys
- 2021Microstructure and mechanical properties of high-Mn-ODS steelscitations
- 2021Development of actual powder layer height depending on nominal layer thicknesses and selection of laser parameterscitations
- 2021Grain boundary engineering and its implications on corrosion behaviour of equiatomic CoCrFeMnNi high entropy alloycitations
- 2021Quantitative Phase Prediction in Dual-Phase High-Entropy Alloys: Computationally Aided Parametric Approachcitations
- 2021The Effect of Al on the Formation of a CrTaO<sub>4</sub> Layer in Refractory High Entropy Alloys Ta-Mo-Cr-Ti-xAlcitations
- 2021Micro-mechanical deformation behavior of CoCrFeMnNi high-entropy alloycitations
- 2021The Creep and Oxidation Behaviour of Pesting-Resistant (Mo,Ti)5Si3-Containing Eutectic-Eutectoid Mo-Si-Ti Alloyscitations
- 2021Microstructure tailoring of Al-containing compositionally complex alloys by controlling the sequence of precipitation and orderingcitations
- 2021The Creep and Oxidation Behaviour of Pesting-Resistant $(Mo,Ti)_{5}Si_{3}$-Containing Eutectic-Eutectoid Mo-Si-Ti Alloys
- 2021Microcantilever Fracture Tests on Eutectic NiAl–Cr(Mo) In Situ Compositescitations
- 2021Influence of Shot Peening on the Isothermal Fatigue Behavior of the Gamma Titanium Aluminide Ti-48Al-2Cr-2Nb at 750 °Ccitations
- 2021Grain boundary engineering and its implications on corrosion behavior of equiatomic CoCrFeMnNi high entropy alloycitations
- 2021Influence of Temperature and Plastic Strain on Deformation Mechanisms and Kink Band Formation in Homogenized HfNbTaTiZrcitations
- 2021Superior low-cycle fatigue properties of CoCrNi compared to CoCrFeMnNicitations
- 2021Flexible Powder Production for Additive Manufacturing of Refractory Metal-Based Alloyscitations
- 2021Microstructural and chemical constitution of the oxide scale formed on a pesting-resistant Mo-Si-Ti alloycitations
- 2021Oxidation Resistance, Creep Strength and Room-Temperature Fracture Toughness of Mo–28Ti–14Si–6C–6B Alloycitations
- 2021Current Status of Research on the Oxidation Behavior of Refractory High Entropy Alloyscitations
- 2021Oxidation mechanism of refractory high entropy alloys Ta-Mo-Cr-Ti-Al with varying Ta contentcitations
- 2021Mo-silicide alloys for high- temperature structural applicationscitations
- 2021Deformation mechanisms of CoCrFeMnNi high-entropy alloy under low-cycle-fatigue loadingcitations
- 2020A New Method for Determining the Brittle-to-Ductile Transition Temperature of a TiAl Intermetalliccitations
- 2020Breakdown of Varvenne scaling in (AuNiPdPt)1−xCu high-entropy alloyscitations
- 2020Effect of Water Vapor on the Oxidation Behavior of the Eutectic High-Temperature Alloy Mo-20Si-52.8Ticitations
- 2020Controlling crystallographic ordering in Mo–Cr–Ti–Al high entropy alloys to enhance ductilitycitations
- 2020Solid solution strengthening and deformation behavior of single-phase Cu-base alloys under tribological loadcitations
- 2020Origins of strength and plasticity in the precious metal based high-entropy alloy AuCuNiPdPtcitations
- 2020Comparison of cryogenic deformation of the concentrated solid solutions CoCrFeMnNi, CoCrNi and CoNicitations
- 2020On the chemical and microstructural requirements for the pesting-resistance of Mo-Si-Ti alloyscitations
- 2020Characterisation of the oxidation and creep behaviour of novel Mo-Si-Ti alloyscitations
- 2020Temperature dependent strengthening contributions in austenitic and ferritic ODS steelscitations
- 2020Formation of complex intermetallic phases in novel refractory high-entropy alloys NbMoCrTiAl and TaMoCrTiAl: Thermodynamic assessment and experimental validationcitations
- 2020Magnetron Sputtered Silicon Coatings as Oxidation Protection for Mo-Based Alloyscitations
- 2020Challenges and Perspectives of the Phase Formation of Internally Oxidized PIT-Type Nb<sub>3</sub>Sn Conductorscitations
- 2020In Situ Thermal-Stage Fitted-STEM Characterization of Spherical-Shaped Co/MoS<sub>2</sub> Nanoparticles for Conversion of Heavy Crude Oilscitations
- 2020Microstructural changes in CoCrFeMnNi under mild tribological loadcitations
- 2020Creep of an oxidation resistant coated Mo-9Si-8B alloycitations
- 2020Dislocation-based serrated plastic flow of high entropy alloys at cryogenic temperaturescitations
- 2020A new strategy to intrinsically protect refractory metal based alloys at ultra high temperaturescitations
- 2020A zone melting device for the in situ observation of directional solidification using high-energy synchrotron x rayscitations
- 2020Dimensionless Enthalpy as Characteristic Factor for Process Control in Laser Powder Bed Fusioncitations
- 2020High-temperature low cycle fatigue behavior of an equiatomic CoCrFeMnNi high-entropy alloycitations
- 2020Effect of Y Additions on the Oxidation Behaviour of Novel Refractory High-Entropy Alloy NbMoCrTiAl at 1000 °C in Aircitations
- 2020Microstructural investigations of novel high temperature alloys based on NiAl-(Cr,Mo)citations
- 2019Precipitation behaviour and mechanical properties of a novel Al<sub>0.5</sub>MoTaTi complex concentrated alloycitations
- 2019High-pressure torsion driven mechanical alloying of CoCrFeMnNi high entropy alloycitations
- 2019On the oxidation mechanism of refractory high entropy alloyscitations
- 2019Characterisation of the oxidation and creep behaviour of novel Mo-Si-Ti alloys
- 2019Study of indium tin oxide-MoS<sub>2</sub> interface by atom probe tomographycitations
- 2019In-situ alloying of AlSi10Mg+Si using Selective Laser Melting to control the coefficient of thermal expansioncitations
- 2019Microstructural evolution during creep of lamellar eutectoid and off-eutectoid FeAl/FeAl2 alloyscitations
- 2019Crystallographic ordering in a series of Al-containing refractory high entropy alloys Ta-Nb-Mo-Cr-Ti-Alcitations
- 2019Influence of SiC/Silica and Carbon/Silica Interfaces on the High-Temperature Creep of Silicon Oxycarbide-Based Glass Ceramics: A Case Studycitations
- 2019AuCuNiPdPt as a benchmark for high entropy alloys
- 2019Constitution, oxidation and creep of eutectic and eutectoid Mo-Si-Ti alloyscitations
- 2018Optimisation of selective laser melting parameters for the Ni-based superalloy IN-738 LC using Doehlert’s designcitations
- 2018Effect of microalloying with silicon on high temperature oxidation resistance of novel refractory high-entropy alloy Ta-Mo-Cr-Ti-Alcitations
- 2018Contribution of Lattice Distortion to Solid Solution Strengthening in a Series of Refractory High Entropy Alloyscitations
- 2018Pulvermetallurgische Herstellung von innovativen Hochtemperaturwerkstoffencitations
- 2018Grain boundary sliding-induced creep of powder metallurgically produced Nb-20Si-23Ti-6Al-3Cr-4Hfcitations
- 2018Peculiarities of deformation of CoCrFeMnNi at cryogenic temperaturescitations
- 2018Phase Evolution in and Creep Properties of Nb-Rich Nb-Si-Cr Eutecticscitations
- 2017Optimisation of selective laser melting parameters for the Ni-based superalloy IN-738 LC using Doehlert’s designcitations
- 2017Effect of microalloying with silicon on high temperature oxidation resistance of novel refractory high-entropy alloy Ta-Mo-Cr-Ti-Al
- 2017Combinatorial exploration of the high entropy alloy system Co-Cr-Fe-Mn-Nicitations
- 2017Tensile creep of miniaturized specimenscitations
- 2017Creep of binary Fe-Al alloys with ultrafine lamellar microstructures
- 2017Creep of binary Fe-Al alloys with ultrafine lamellar microstructurescitations
- 2017Adaption of metal injection molding to quinary high entropy alloys
- 2017Microstructure formation and resistivity change in CuCr during rapid solidificationcitations
- 2017Effect of Ti content and nitrogen on the high-temperature oxidation behavior of (Mo,Ti)<sub>5</sub>Si<sub>3</sub>citations
- 2017Effect of minor alloying elements on crack-formation characteristics of Hastelloy-X manufactured by selective laser meltingcitations
- 2017The effect of the ternary elements B, Ti, Cr, Cu, and Mo on fully lamellar FeAl + FeAl<sub>2</sub> alloyscitations
- 2017High-Resolution Studies on Nanoscaled Ni/YSZ Anodescitations
- 2017Face Centred Cubic Multi-Component Equiatomic Solid Solutions in the Au-Cu-Ni-Pd-Pt Systemcitations
- 2017High-Temperature Oxidation Behavior of Refractory High-Entropy Alloys: Effect of Alloy Compositioncitations
- 2017Optimisation of selective laser melting parameters for the Ni-based superalloy IN-738 LC using Doehlert's designcitations
- 2017Phase-field simulation of the microstructure evolution in the eutectic NiAl-34Cr systemcitations
- 2017Coarsening kinetics of lamellar microstructures: Experiments and simulations on a fully-lamellar Fe-Al in situ compositecitations
- 2017Characterization of Oxidation Kinetics of Mo–Si–B-Based Materialscitations
- 2017Enhanced Oxidation Resistance of Mo–Si–B–Ti Alloys by Pack Cementationcitations
- 2017Effect of Ti addition on the thermal expansion anisotropy of Mo<sub>5</sub>Si<sub>3</sub>citations
- 2016Synthesis and high-temperature creep behavior of a SiLuOC-based glass-ceramiccitations
- 2016Microstructure and mechanical properties at elevated temperatures of a new Al-containing refractory high-entropy alloy Nb-Mo-Cr-Ti-Alcitations
- 2016Effect of strain-rate on the deformation response of D0<sub>3</sub>-ordered Fe<sub>3</sub>Alcitations
- 2016High temperature oxidation behavior of an equimolar refractory metal-based alloy [Formula presented] with and without Si additioncitations
- 2016High-temperature creep behavior of a SiOC glass ceramic free of segregated carboncitations
- 2016MIM for HT turbine parts : Gas-atomized versus mechanically milled Nb-si alloy powder
- 2016The Al-Rich Part of the Fe-Al Phase Diagramcitations
- 2016Orientation relationship of eutectoid FeAl and FeAl<sub>2</sub>citations
- 2016Physically motivated model for creep of directionally solidified eutectics evaluated for the intermetallic NiAl-9Mocitations
- 2016Microstructure Evolution in a New Refractory High-Entropy Alloy W-Mo-Cr-Ti-Alcitations
- 2016Investigation of CuCr contact materials for the vacuum switching technology,Untersuchung von CuCr- Kontaktwerkstoffen für die Vakuumschalttechnik
- 2016Comparison of the microstructure and the mechanical properties of ferritic and austenitic ODS steels
- 2016MIM for HT turbine parts: Gas-atomized versus mechanically milled Nb-Si alloy powder
- 2016Influence of post heat treatments on anisotropy of mechanical behaviour and microstructure of Hastelloy-X parts produced by selective laser meltingcitations
- 2015Magnetron Sputtered Mo(Si<sub>x</sub>,Al<sub>1−x</sub>)<sub>2</sub> Oxidation Protection Coatings for Mo–Si–B Alloyscitations
- 2015The influence of microstructural features on the electrical conductivity of solid phase sintered CuCr compositescitations
- 2015Experimental and Numerical Investigation on the Phase Separation Affected by Cooling Rates and Marangoni Convection in Cu-Cr Alloyscitations
- 2015Oxidation Behavior of Binary Aluminium-Rich Fe–Al Alloys with a Fine-Scaled, Lamellar Microstructurecitations
- 2015Mechanisms of oxide scale formation on yttrium-alloyed Mo-Si-B containing fine-grained microstructurecitations
- 2015Hall-petch breakdown at elevated temperaturescitations
- 2015Phase equilibria, microstructure, and high temperature oxidation resistance of novel refractory high-entropy alloyscitations
- 2015Creep Resistance and Oxidation Behavior of Novel Mo-Si-B-Ti Alloyscitations
- 2015Oxidation behavior of pack-cemented Si-B oxidation protection coatings for Mo-Si-B alloys at 1300°Ccitations
- 2015Influence of Vanadium on the Oxidation Resistance of the Intermetallic Phase Nb<sub>5</sub>Si<sub>3</sub>citations
- 2014Correlation between microstructure and properties of fine grained Mo-Mo<sub>3</sub>Si-Mo<sub>5</sub>SiB<sub>2</sub> alloyscitations
- 2014Influence of zirconium content on microstructure and creep properties of Mo-9Si-8B alloyscitations
- 2014Oxidation behavior of magnetron sputtered double layer coatings containing molybdenum, silicon and boroncitations
- 2014Influence of the processing technique on the properties of Nb-Si intermetallic composites for high temperature applications processed by MIM and HIP
- 2014High-temperature oxidation behavior of Mo-Si-B-based and Co-Re-Cr-based alloyscitations
- 2014Oxidation mechanisms of lanthanum-alloyed Mo-Si-Bcitations
- 2014High-temperature creep and oxidation behavior of Mo-Si-B alloys with high Ti contentscitations
- 2014Influence of zirconium content on microstructure and creep properties of Mo--9Si--8B alloyscitations
- 2014High-temperature creep behavior of SiOC glass-ceramics: Influence of network carbon versus segregated carboncitations
- 2014Influence of powder metallurgical processing routes on phase formations in a multicomponent NbSi-alloycitations
- 2014Influence of Directional Solidification on the Creep Properties of a Binary NbSi Eutectic Alloycitations
- 2013Influence of fiber alignment on creep in directionally solidified NiAl-10Mo in-situ compositescitations
- 2013Effect of yttrium alloying on intermediate to high-temperature oxidation behavior of Mo-Si-B alloyscitations
- 2013Effect of phase architecture on the thermal expansion behavior of interpenetrating metal/ceramic composites
- 2013The effect of micro-alloying with Zr and Nb on the oxidation behavior of Fe<sub>3</sub>Al and FeAl alloyscitations
- 2013Effects of Zr additions on the microstructure and the mechanical behavior of PM Mo-Si-B alloyscitations
- 2013Effect of Ti (Macro-) alloying on the high-temperature oxidation behavior of ternary Mo-Si-B alloys at 820-1,300 Ccitations
- 2013A study on effect of reactive and rare earth element additions on the oxidation behavior of Mo-Si-B systemcitations
- 2013Microstructural and micro-mechanical properties of Mo-Si-B alloyed with Y and Lacitations
- 2012Potential of mechanical surface treatment for mould and die productioncitations
- 2012On the estimation of true hall-Petch constants and their role on the superposition law exponent in al alloyscitations
- 2012Two strain-hardening mechanisms in nanocrystalline austenitic steel: An in situ synchrotron X-ray diffraction studycitations
- 2012The effects of boron addition on the microstructure and mechanical properties of Co-Re-based high-temperature alloyscitations
- 2012High-temperature oxidation behaviour of a single-phase (Mo,Ti) <sub>5</sub>Si <sub>3</sub> (Mo-Si-Ti) alloycitations
- 2011Oxidation behavior of Mo-Si-B-(X) alloys: Macro- and microalloying (X= Cr, Zr, La <sub>2</sub>O <sub>3</sub>)citations
- 2011Effect of yttria particle size on the microstructure and compression creep properties of nanostructured oxide dispersion strengthened ferritic (Fe-12Cr-2W-0.5Y2O3) alloycitations
- 2011Temperature dependence of the strength of fine- and ultrafine-grained materialscitations
- 2011Modification of Mo-Si alloy microstructure by small additions of Zrcitations
- 2011Phase continuity in high temperature Mo-Si-B alloys: A FIB-Tomography Studycitations
- 2010On the Hall-Petch relationship in a nanostructured Al-Cu alloycitations
- 2010Compression creep studies of mechanically alloyed nanostructured Fe-12Cr-2W-0.25Y<sub>2</sub>O<sub>3</sub> ODS alloycitations
- 2010Microstructural studies on nanocrystalline oxide dispersion strengthened austenitic (Fe-18Cr-8Ni-2W-0.25Y<sub>2</sub>O<sub>3</sub>) alloy synthesized by high energy ball milling and vacuum hot pressingcitations
- 2010Creep strength of a binary Al<sub>62</sub>Ti<sub>38</sub> alloycitations
- 2010Synthesis and characterization of lamellar and fibre-reinforced NiAl-Mo and NiAl-Crcitations
- 2010High temperature creep behaviour of Al-rich Ti-Al alloys
- 2010L2<sub>1</sub>-ordered Fe-Al-Ti alloyscitations
- 2010Recent advances in the development of mechanically alloyed Mo silicide alloyscitations
- 2010Influence of processing on the microstructure and mechanical behaviour of Mo-Si-B alloyscitations
- 2010Low cycle fatigue of Fe<sub>3</sub>Al-based iron aluminide with and without Crcitations
- 2009Creep behavior and damage of Ni-base superalloys PM 1000 and PM 3030citations
- 2009Ultrafine-grained nanocluster-strengthened alloys with unusually high creep strengthcitations
- 2009Metallic materials for structural applications beyond nickel-based superalloyscitations
- 2009Microstructures of Co-Re-Cr, Mo-Si and Mo-Si-B high-temperature alloyscitations
- 2009Microstructure and mechanical properties of nanostructured Al-4Cu alloy produced by mechanical alloying and vacuum hot pressingcitations
- 2009Characterization of microstructures, mechanical properties, and oxidation behavior of coherent A2 + L2<sub>1</sub> Fe-Al-Ticitations
- 2009Ductilization of Mo-Si solid solutions manufactured by powder metallurgycitations
- 2009Creep strength of centrifugally cast Al-rich TiAl alloyscitations
- 2009High temperature strength and failure of the Ni-base superalloy PM 3030citations
- 2008Molybdenum alloys for high temperature applications in aircitations
- 2008Mechanically alloyed Mo-Si-B alloys with a continuous α-Mo matrix and improved mechanical propertiescitations
- 2008Microstructure and mechanical properties of ultra fine grained Cu-Zn and Cu-Al alloys produced by cryorolling and annealingcitations
- 2007Assessment of the high temperature deformation behavior of molybdenum silicide alloyscitations
- 2007High temperature deformation behavior of a mechanically alloyed Mo silicide alloy
- 2007FEM-simulation of real and artificial microstructures of Mo-Si-B alloys for elastic properties and comparison with analytical methodscitations
- 2007The influence of silicon on the strength and fracture toughness of molybdenumcitations
- 2006Superplasticity of a multiphase refractory Mo-Si-B alloycitations
- 2006Assessment of creep behaviour of the die-cast cylinder-head alloy AlSi6Cu4-T6citations
- 2006Ductility and impact resistance of powder-metallurgical molybdenum-rhenium alloyscitations
- 2005Dependence of mechanical strength on grain structure in the γ′ and oxide dispersion-strengthened nickelbase superalloy PM 3030citations
- 2005Elevated temperature deformation behavior of Zr-based bulk metallic glassescitations
- 2005Assessment of a powder metallurgical processing route for refractory metal silicide alloyscitations
- 2005On the Orowan stress in intermetallic ODS alloys and its superposition with grain size and solid solution hardeningcitations
- 2004Creep behaviour of ultrafine-grained oxide dispersion strengthened copper prepared by cryomillingcitations
- 2004Microstructure and room temperature hardening of ultra-fine-grained oxide-dispersion strengthened copper prepared by cryomillingcitations
- 2004Novel dispersion strengthened metals by mechanical alloyingcitations
- 2004Superplasticity in Zr-based bulk metallic glasses: A critical overview
- 2004Modelling of particle strengthening in the γ′ and oxide dispersion strengthened nickel-base superalloy PM3030citations
- 2004Characterization of an industrially processed Mo-based silicide alloycitations
- 2004Microstructure and deformation behaviour of ultra-fine-grained ODS copper prepared by mechanical alloying
- 2003Supersaturated solid solution of niobium in copper by mechanical alloyingcitations
- 2003A critical assessment of high temperature creep and fatigue of ODS Ni-base superalloys
- 2003Free volume evolution in bulk metallic glass during high temperature creep
- 2003Creep properties of boron-doped dual-phase Ti-rich L1<sub>2</sub>-based trialuminide intermetallicscitations
- 2003Oxide dispersion-strengthened silver: Manufacturing and propertiescitations
- 2002Superposition of grain size and dispersion strengthening in ODS Ll<inf>2</inf>- (Al,Cr)<inf>3</inf> Ticitations
- 2002Thermal relaxation and high temperature creep of Zr<inf>55</inf>Cu<inf>30</inf>Al<inf>10</inf>Ni<inf>5</inf> bulk metallic glasscitations
- 2002Microstructure and mechanical properties of Cu-Ag microcomposites for conductor wires in pulsed high-field magnetscitations
- 2002Fatigue behavior of duplex treated TiC<sub>x</sub>N<sub>l-x</sub>-and Ti<sub>l-x</sub>Al<sub>x</sub>N-hard coating steel compoundscitations
- 2002A unified description of creep in pure and dispersion-strengthened coppercitations
- 2002High-strength, high-nitrogen stainless steel-copper composite wires for conductors in pulsed high-field magnetscitations
- 2001Bulk nanostructured Zr-based multiphase alloys with high strength and good ductilitycitations
- 2001On the high temperature creep and relaxation behaviour of Zr-based bulk metallic glasses
- 2001Development of high-strength and high-conductivity conductor materials for pulsed high-field magnets at Dresdencitations
- 2001Deformation behavior of Zr-based metallic glassescitations
- 2001Order strengthening in the cast nickel-based superalloy IN 100 at room temperaturecitations
- 2001Nanostructured materials in multicomponent alloy systemscitations
- 2001High-strength pearlitic steel-copper composite wires for conductors in pulsed high-field magnetscitations
- 2001Plastic anisotropy of textured ODS nickel-base alloy PM 1000citations
- 2001Bulk nanostructured multicomponent alloys
- 2000New method of determining strength and fracture toughness of thin hard coatingscitations
- 2000Synthesis and properties of Zr-based metallic glasses and glass-matrix compositescitations
- 2000Glass transition, viscosity of the supercooled liquid and crystallization behaviour of Zr-Al-Cu-Ni-Fe metallic glassescitations
- 2000High-temperature deformation behavior of PM 2000 single crystals
- 2000Cyclic stress-strain response of the ODS nickel-base, superalloy PM 1000 under variable amplitude loading at high temperaturescitations
- 2000Newtonian flow of Zr<inf>55</inf>Cu<inf>30</inf>Al<inf>10</inf>Ni<inf>5</inf> bulk metallic glassy alloyscitations
- 2000Monotonic and cyclic high temperature deformation behavior of the ODS nickel-base superalloy PM 1000
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Phasenumwandlungen zur systematischen Gefügeeinstellung mehrphasiger Ta-Mo-Ti-Cr-Al-Legierungen
Abstract
Legierungen mit komplexer Zusammensetzung (CCA, engl. Compositionally Complex Alloys) sind durch nahe äquimolare oder äquimolare Zusammensetzung mit typischerweise vier bis sechs Elementen definiert. Im Gegensatz zu konventionellen Legierungen mit einem Basiselement erlauben die zusätzlichen Freiheitsgrade durch den erweiterten Zusammensetzungsbereich die Synthese von Legierungen mit einem außergewöhnlichen Eigenschaftsportfolio. Im Bereich der Konstruktionswerkstoffe für Hochtemperaturanwendungen weisen Zusammensetzungen von refraktärmetallbasierten CCA (RCCA) bereits in einigen Bereichen bessere Eigenschaften als Superlegierungen auf. So zeigt zum Beispiel die äquimolare TaMoTiCrAl-Legierung vielversprechende Oxidationseigenschaften bis 1500 °C, gleichzeitig jedoch unzureichende mechanische Eigenschaften bei tiefen Temperaturen. In zahlreichen untersuchten CCA konnte die beobachtete geringe plastische Verformbarkeit auf eine Kombination aus unerwünschten (intermetallischen) Phasen mit geordneten Kristallstrukturen der Matrix zurückgeführt werden.Das Ziel der vorliegenden Arbeit besteht darin, Legierungen aus dem System Ta-Mo-Ti-Cr-Al hinsichtlich ihres Gefüges, der Phasenumwandlungen sowie der mechanischen Eigenschaften zu charakterisieren. Durch Manipulation der Zusammensetzung sollen hierbei die Festkörperphasenumwandlungen hinsichtlich der Umwandlungstemperaturen und -pfade verändert werden, um ein optimiertes Gefüge für Hochtemperaturanwendungen einzustellen. Eine thermodynamische Datenbank wurde hierbei genutzt, um die zu erwarteten Phasenverteilungen bei unterschiedlichen Legierungszusammensetzungen und Temperaturen vorherzusagen.Untersuchungen im System (100-x)(MoTiCr)-xAl (wobei x die Elementkonzentration in At.% ist) validierten die Annahme, dass sich der Ordnungsgrad der kubisch-raumzentrierten Kristallstruktur gezielt durch die Al-Konzentration in diesem System manipulieren lässt. Durch thermische Analysen konnte bei Legierungen mit x_Al > 10 At.% die Phasenumwandlung beim Abkühlen eines einphasigen A2- zu einem B2-Mischkristall mittels einer athermischen Festkörperphasenumwandlung zweiter Ordnung nachgewiesen werden. Der Einfluss der Kristallstruktur auf die mechanischen Eigenschaften wurde in dieser Arbeit durch quasistatische Druckversuche analysiert, in denen ein Zusammenhang zwischen Ordnung und plastischer Verformbarkeit verifiziert werden konnte.Neben den einphasigen Legierungen wurden ebenfalls mehrphasige Legierungen mit einer Kombination aus A2- und B2-Kristallstruktur synthetisiert. So war es möglich durch gezielte Optimierungen der Cr-, Ti- und Al Konzentrationen unterschiedliche, mehrphasige Gefüge einzustellen. Hierbei zeigte sich, dass die Kristallstruktur der Matrix sowie der Ausscheidungen wesentlich durch die Al Konzentration bestimmt ist. Durch die Verringerung der Cr-Konzentration bleibt die Ausbildung der unerwünschten Laves-Phase an den Korngrenzen aus. Untersuchungen auf verschiedenen Längenskalen zeigten, dass die Phasen-umwandlung zur Ausscheidungsbildung der diffusionsgesteuerten, diskontinuierlichen Phasenumwandlung mit scharfen, bewegenden Grenzflächen mit den Stadien Keimbildung und Keimwachstum zuzuordnen ist.