| 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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Kiener, Daniel
Montanuniversität Leoben
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (39/39 displayed)
- 2024Micro-Mechanical Fracture Investigations on Grain Size Tailored Tungsten-Copper Nanocompositescitations
- 2024Exploring Refinement Characteristics in FeTi‐Cu x Composites: A Study of Localization and Abrasion Constraintscitations
- 2024Mechanical processing and thermal stability of the equiatomic high entropy alloy TiVZrNbHf under vacuum and hydrogen pressurecitations
- 2024Automatic and time-resolved determination of fracture characteristics from in situ experimentscitations
- 2023Effect of wire-arc directed energy deposition on the microstructural formation and age-hardening response of the Mg-9Al-1Zn (AZ91) alloycitations
- 2023Special Issue “Novel Structural and Functional Material Properties Enabled by Nanocomposite Design”citations
- 2023Deformation and failure behavior of nanocrystalline WCucitations
- 2023Precipitation behavior of hexagonal carbides in a C containing intermetallic γ-TiAl based alloycitations
- 2023From unlikely pairings to functional nanocomposites: FeTi–Cu as a model systemcitations
- 2023On the stability of Ti(Mn,Al)2 C14 Laves phase in an intermetallic Ti–42Al–5Mn alloycitations
- 2023Revealing the nano-scale mechanisms of the limited non-basal plasticity in magnesium
- 2023Nanoscale printed tunable specimen geometry enables high-throughput miniaturized fracture testingcitations
- 2023On the stability of Ti(Mn,Al)$_2$ C14 Laves phase in an intermetallic Ti–42Al–5Mn alloycitations
- 2022In situ micromechanical analysis of a nano-crystalline W-Cu compositecitations
- 2022Interface mediated deformation and fracture of an elastic–plastic bimaterial system resolved by in situ transmission scanning electron microscopycitations
- 2022Tuning mechanical properties of ultrafine-grained tungsten by manipulating grain boundary chemistrycitations
- 2022Oxidation resistance of cathodic arc evaporated Cr$_{0.74}$Ta$_{0.26}$N coatingscitations
- 2022The influence of chemistry on the interface toughness in a WTi-Cu systemcitations
- 2021Prospects of Using Small Scale Testing to Examine Different Deformation Mechanisms in Nanoscale Single Crystals—A Case Study in Mgcitations
- 2021Extracting information from noisy data: strain mapping during dynamic in situ SEM experimentscitations
- 2021Controlling the high temperature deformation behavior and thermal stability of ultra-fine-grained W by re alloyingcitations
- 2021How grain boundary characteristics influence plasticity close to and above the critical temperature of ultra-fine grained bcc Ta2.5Wcitations
- 2020Thermally activated deformation mechanisms and solid solution softening in W-Re alloys investigated via high temperature nanoindentationcitations
- 2020Correlation between fracture characteristics and valence electron concentration of sputtered Hf-C-N based thin filmscitations
- 2020In situ fracture observations of distinct interface types within a fully lamellar intermetallic TiAl alloycitations
- 2020Experimental and Numerical Investigation of the Deformation and Fracture Mode of Microcantilever Beams Made of Cr(Re)/Al2O3 Metal–Matrix Compositecitations
- 2020In-situ observation of the initiation of plasticity by nucleation of prismatic dislocation loopscitations
- 2020Probing defect relaxation in ultra-fine grained Ta using micromechanical spectroscopycitations
- 2019Bioinspired nacre-like alumina with a bulk-metallic glass-forming alloy as a compliant phasecitations
- 2019Rate limiting deformation mechanisms of bcc metals in confined volumescitations
- 2018In-situ elastic-plastic fracture mechanics on the microscale by means of continuous dynamical testingcitations
- 2018In-situ TEM observation of {101¯2} twin-dominated deformation of Mg pillarscitations
- 2016Cross-sectional structure-property relationship in a graded nanocrystalline Ti1-xAlxN thin filmcitations
- 2016Synthesis and Mechanical Characterisation of an Ultra-Fine Grained Ti-Mg Compositecitations
- 2015Fracture mechanics of thin film systems on the sub-micron scalecitations
- 2015Fracture mechanics of thin film systems on the sub-micron scalecitations
- 2013Influence of Metastable Retained Austenite on Macro and Micromechanical Properties of Steel Processed by the Q&P Processcitations
- 2010Influence of Yttrium on the Thermal Stability of Ti-Al-N Thin Filmscitations
- 2009Overview on established and novel FIB based miniaturized mechanical testing using in-situ SEMcitations
Places of action
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article
In situ micromechanical analysis of a nano-crystalline W-Cu composite
Abstract
W-Cu composites are commonly used as heat-sinks or high-performance switches in power electronics. To enhance their mechanical properties and mutually their usability, grain refinement of the initially coarse-grained microstructure was realized using high–pressure torsion. This leads to different microstructural conditions, exhibiting fine-, ultrafine-grained or nanocrystalline microstructures. Scanning as well as transmission electron microscopy was performed to analyze the respective grain size and microstructures. The hardness and Young’s modulus of the deformed specimens were quantified by nanoindentation testing. Furthermore, X–ray diffraction indicated a decreased grain size and changed lattice spacings upon increasing the deformation ratio. The deformed specimens were tested for their fracture behaviour by continuous stiffness measurements during in-situ microcantilever bending experiments. Here, mean J–integral values of 288 ± 38 J/m2 and 402 ± 89 J/m2 were determined for the 5 and 50 times turned specimens, respectively. The combination of different characterization methods applied on a W–Cu composite allows to identify both, beneficial and unfavourable microstructural components regarding the fracture properties.