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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Rentenberger, Christian
University of Vienna
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (46/46 displayed)
- 2024Probing the interaction range of electron beam-induced etching in STEM by a non-contact electron beam
- 2024Grain-Size-Dependent Plastic Behavior in Bulk Nanocrystalline FeAl
- 2024Effect of V content on the microstructure and mechanical properties of HPT nanostructured CoCrFeMnNiV x high entropy alloys
- 2022In situ STEM analysis of electron beam induced chemical etching of an ultra-thin amorphous carbon foil by oxygen during high resolution scanningcitations
- 2022New Insights into the Metallization of Graphene-Supported Composite Materials-from 3D Cu-Grown Structures to Free-Standing Electrodeposited Porous Ni Foilscitations
- 2021Pursuit of optimal synthetic conditions for obtaining colloidal zero-valent iron nanoparticles by scanning pulsed laser ablation in liquidscitations
- 2021Direct observation of nanocrystal-induced enhancement of tensile ductility in a metallic glass compositecitations
- 2020Pursuit of optimal synthetic conditions for obtaining colloidal zero-valent iron nanoparticles by scanning pulsed laser ablation in liquidscitations
- 2020Effect of mechanically induced structural rejuvenation on the deformation behaviour of CuZr based bulk metallic glasscitations
- 2020Anomalous Evolution of Strength and Microstructure of High-Entropy Alloy CoCrFeNiMn after High-Pressure Torsion at 300 and 77 Kcitations
- 2019Femtosecond laser-assisted synthesis of Ni/Au BONs in various alcoholic solventscitations
- 2019Electron beam induced rejuvenation in a metallic glass film during in-situ TEM tensile strainingcitations
- 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
- 2017Reordering a deformation disordered intermetallic compound by antiphase boundary movementcitations
- 2017Laser-Assisted Synthesis of Colloidal Ni/NiOx Core/Shell Nanoparticles in Water and Alcoholic Solventscitations
- 2017Revealing anelasticity and structural rearrangements in nanoscale metallic glass films using in situ TEM diffractioncitations
- 2017Influence of the Ag concentration on the medium-range order in a CuZrAlAg bulk metallic glasscitations
- 2016Local, atomic-level elastic strain measurements of metallic glass thin films by electron diffractioncitations
- 2016Influence of Ag and Co additions on glass-forming ability, thermal and mechanical properties of Cu–Zr–Al bulk metallic glassescitations
- 2015Unexpected grain size reduction by heating in bulk nanocrystalline FeAlcitations
- 2015Electron beam induced artifacts during in situ TEM deformation of nanostructured metalscitations
- 2014The structural evolution of multi-layer graphene stacks in carbon fibers under load at high temperature - A synchrotron radiation studycitations
- 2012Synthesis and characterization of electrodeposited hierarchical nanodendritic NiCoFe alloy powderscitations
- 2012Radiation effects in bulk nanocrystalline FeAl alloycitations
- 2012Spinodal decomposition in (CaxBa1-x)(y)Fe4Sb12citations
- 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
- 2011Nanocrystalline Zr3Al made through amorphization by repeated cold rolling and followed by crystallizationcitations
- 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
- 2010In situ TEM study of microplasticity and Bauschinger effect in nanocrystalline metalscitations
- 2010Structural modifications during heating of bulk nanocrystalline FeAl produced by high-pressure torsioncitations
- 2008The stability of screw dipoles in Ni3Al studied by TEMcitations
- 2008TEM study of local disordering: a structural phase change induced by high-pressure torsioncitations
- 2008Extensive disordering in long-range-ordered Cu3Au induced by severe plastic deformation studied by transmission electron microscopycitations
- 2008High pressure torsion of intermetallic Zr3Alcitations
- 2007Coherent x-ray diffraction imaging of grown-in antiphase boundaries in Fe65 Al35citations
- 2007Formation and structures of bulk nanocrystalline intermetallic alloys studied by transmission electron microscopycitations
- 2004Nanostructures in L12-ordered Cu3Au processed by torsion under high pressurecitations
- 2004HRTEM analysis of nanostructured alloys processed by severe plastic deformationcitations
- 2004TEM of nanostructured metals and alloyscitations
- 2003TEM investigation of the structure of deformation-induced antiphase boundary faults in Ni3Alcitations
- 2001On the origin of work softening of Ni3Al deformed along [001] above the peak temperaturecitations
Places of action
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article
In situ TEM study of microplasticity and Bauschinger effect in nanocrystalline metals
Abstract
In situ transmission electron microscopy straining experiments with concurrent macroscopic stress–strain measurements were performed to study the effect of microstructural heterogeneity on the deformation behavior of nanocrystalline metal films. In microstructurally heterogeneous gold films (mean grain size dm = 70 nm) comprising randomly oriented grains, dislocation activity is confined to relatively larger grains, with smaller grains deforming elastically, even at applied strains approaching 1.2%. This extended microplasticity leads to build-up of internal stresses, inducing a large Bauschinger effect during unloading. Microstructurally heterogeneous aluminum films (dm = 140 nm) also show similar behavior. In contrast, microstructurally homogeneous aluminum films comprising mainly two grain families, both favorably oriented for dislocation glide, show limited microplastic deformation and minimal Bauschinger effect despite having a comparable mean grain size (dm = 120 nm). A simple model is proposed to describe these observations. Overall, our results emphasize the need to consider both microstructural size and heterogeneity in modeling the mechanical behavior of nanocrystalline metals.