693.932 PEOPLE
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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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| 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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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Gammer, Christoph
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Topics
Publications (40/40 displayed)
- 2024Observing High‐Cycle Fatigue Damage in Freestanding Gold Thin Films with Bulge Testing and Intermittent Transmission Electron Microscopy Imagingcitations
- 2024Semi-analytical and experimental heat input study of additively manufactured Zr-based bulk metallic glasscitations
- 2024Multiscale in-situ observations of the micro- and nanostructure of a PH 13-8 Mo maraging steel during austenitizationcitations
- 2024Probing the interaction range of electron beam-induced etching in STEM by a non-contact electron beam
- 2024Cyclic Failure of a Cr–Au Bilayer on Polyimide: In Situ Transmission Electron Microscopy Observations of Interfacial Dislocation Mechanisms
- 2024Grain-Size-Dependent Plastic Behavior in Bulk Nanocrystalline FeAl
- 2024Coupling of alloy chemistry, diffusion and structure by grain boundary engineering in Ni–Cr–Fecitations
- 2023Rejuvenation engineering in metallic glasses by complementary stress and structure modulationcitations
- 2023Design of Laves phase-reinforced compositionally complex alloycitations
- 2023Can Severe Plastic Deformation Tune Nanocrystallization in Fe-Based Metallic Glasses?citations
- 2023Engineering nanostructured metallic thin films by pulsed laser deposition with an outstanding combination of mechanical properties
- 2023Hydrogen Evolution Reaction on Ultra-Smooth Sputtered Nanocrystalline Ni Thin Films in Alkaline Media—From Intrinsic Activity to the Effects of Surface Oxidationcitations
- 2023Ti$_{40}$Zr$_{10}$Cu$_{36}$Pd$_{14}$ bulk metallic glass as oral implant materialcitations
- 2023Al‐doped ZnO‐Coated LiNi1/3Mn1/3Co1/3O2 Powder Electrodes: The Effect of a Coating Layer on The Structural and Chemical Stability of The Electrode / Electrolyte Interfacecitations
- 2023Creep-dominated fatigue of freestanding gold thin films studied by bulge testingcitations
- 2023Additively manufactured equiatomic CoCrFeMnNi high entropy alloy: Precipitation-induced heterogeneity by mechano-chemical couplingcitations
- 2023Ti40Zr10Cu36Pd14 bulk metallic glass as oral implant materialcitations
- 2023Describing mechanical damage evolution through in situ electrical resistance measurementscitations
- 2022Antibacterial activity, cytocompatibility, and thermomechanical stability of Ti40Zr10Cu36Pd14 bulk metallic glasscitations
- 2022On the existence of orthorhombic martensite in a near-α titanium base alloy used for additive manufacturingcitations
- 2022Oxide-stabilized microstructure of severe plastically deformed CuCo alloyscitations
- 2021Effect of high pressure torsion on crystallization and magnetic properties of Fe$_{73.9}$Cu$_{1}$Nb$_{3}$Si$_{15.5}$B$_{6.6}$citations
- 2021Deformation-Mode-Sensitive Behavior of CuZr-Based Bulk Metallic Glasses Under Dynamic Loadingcitations
- 2021Direct observation of nanocrystal-induced enhancement of tensile ductility in a metallic glass compositecitations
- 2021High entropy alloy nanocomposites produced by high pressure torsioncitations
- 2021Effect of high pressure torsion on crystallization and magnetic properties of Fe73.9Cu1Nb3Si15.5B6.6citations
- 2020Novel intermetallic-reinforced near-α Ti alloys manufactured by spark plasma sinteringcitations
- 2018Structural and mechanical characterization of heterogeneities in a CuZr-based bulk metallic glass processed by high pressure torsioncitations
- 2018Anomalous re-ordering of Fe3Al disordered by high pressure torsion deformationcitations
- 2017Synthesis and evaluation of new radical photoinitiators bearing trialkoxysilyl groups for surface immobilizationcitations
- 2017Influence of the Ag concentration on the medium-range order in a CuZrAlAg bulk metallic glasscitations
- 2012Synthesis and characterization of electrodeposited hierarchical nanodendritic NiCoFe alloy powderscitations
- 2012Radiation effects in bulk nanocrystalline FeAl alloycitations
- 2011Growth of nanosized chemically ordered domains in intermetallic FeAl made nanocrystalline by severe plastic deformationcitations
- 2011Three-Dimensional Analysis by Electron Diffraction Methods of Nanocrystalline Materialscitations
- 2011Thermally induced transition from a ferromagnetic to a paramagnetic state in nanocrystalline FeAl processed by high-pressure torsioncitations
- 2011Preparation of CoNi high surface area porous foams by substrate controlled electrodepositioncitations
- 2010Electron microscopy of severely deformed L12 intermetallicscitations
- 2010Quantitative local profile analysis of nanomaterials by electron diffractioncitations
- 2010Structural modifications during heating of bulk nanocrystalline FeAl produced by high-pressure torsioncitations
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document
Thermally induced transition from a ferromagnetic to a paramagnetic state in nanocrystalline FeAl processed by high-pressure torsion
Abstract
The B2 ordered intermetallic compound FeAl shows a paramagnetic to ferromagnetic transition upon plastic deformation. The magnetic transformation is caused by the formation of a high density of antiphase boundary (APB) tubes leading to an increased number of Fe-Fe nearest neighbour pairs. In the present study it is shown that the temperature of the back transition from the ferromagnetic to the paramagnetic state depends strongly on the deformation mode. FeAl deformed by high pressure torsion (HPT) is investigated by differential scanning calorimetry, transmission electron microscopy and magnetic measurements. Based on the results of FeAl made nanocrystalline and disordered by HPT, it is concluded that the state of ferromagnetism vanishes almost completely at temperatures before re-ordering of the B2 long-range order has been encountered. This is in contrast to the findings reported for ball-milled FeAl indicating that the magnetic back transition and re-ordering occur at the same temperature. A model based on a vacancy driven change of Fe-Fe nearest neighbour configurations is proposed to explain the magnetic back transition after HPT deformation occurring at much lower temperatures.