Publication

Thermally activated deformation of two- and three-variant nanotwinned L10 Au–Cu–Pt

Publications associées (38)

Dislocation cross-slip in fcc solid solution alloys

Cross-slip is a fundamental process of screw dislocation motion and plays an important role in the evolution of work hardening and dislocation structuring in metals. Cross-slip has been widely studied in pure FCC metals but rarely in FCC solid solutions. H ...

2017

Nanocrystalline metals: transient testing during in situ X-ray diffraction and molecular dynamics

Zhen Sun

Nanocrystalline (NC) metals have attracted widespread interest in materials science due to their high strength compared to coarse-grained counterparts. It is well know that during uniaxial deformation, the stress-strain behaviour exhibits an extraordinary ...

EPFL2016

Deformation behavior of nanoporous polycrystalline silver layers sintered by low temperature bonding: experiment and simulation

Saba Zabihzadeh

Integrated circuit packaging technology has become a prime design consideration for the develop-ment of electronic system concepts. One key issue is the bonding layer between chip and substrate. Currently, high-lead solder materials are being used, which a ...

EPFL2016

Wedge-shaped twins and pseudoelasticity in fcc metallic nanowires under bending

Wolfram Georg Nöhring

Molecular dynamics simulations were performed to study the deformation mechanisms of < 110 >-oriented, faceted Cu and Au nanowires under bending along three different crystallographic directions. Independent of the bending direction, the stress field is ch ...

Elsevier Science Bv2016

Strain hardening in 2D discrete dislocation dynamics simulations: A new '2.5D' algorithm

William Curtin, Shyam Mohan Keralavarma

The two-dimensional discrete dislocation dynamics (2D DD) method, consisting of parallel straight edge dislocations gliding on independent slip systems in a plane strain model of a crystal, is often used to study complicated boundary value problems in crys ...

Pergamon-Elsevier Science Ltd2016

Magnesium interatomic potential for simulating plasticity and fracture phenomena

William Curtin, Michael Frederick Francis

Magnesium has multiple dislocation and twinning systems with starkly different properties, which make its plastic deformation strongly anisotropic and highly complex. Existing empirical interatomic potentials fail to capture the full scope of these propert ...

Institute of Physics2015

Cast aluminium microwires

Jérôme Krebs

Plasticity size effects have been the focus of strong recent interest due to the miniaturization of devices such as actuators and different medical apparatuses. Devices with a sub-micrometre dimension have a high market potential and therefore a thorough u ...

EPFL2015

Embrittlement induced by the synergistic effects of radiation damage and helium in structural steels

Kun Wang

Ferritic/martensitic steels are candidate materials for fusion reactor structural components, liquid metal containers of spallation neutron sources, and accelerator driven systems, with good radiation resistance and thermo-mechanical properties. However, e ...

EPFL2015

Deformation behavior of sintered nanocrystalline silver layers

Helena Van Swygenhoven, Steven Van Petegem

The microstructure of porous silver layers produced under different low temperature pressure-assisted sintering conditions is characterized and linked with the mechanical behavior studied insitu during X-ray diffraction. Peak profile analysis reveals impor ...

Pergamon-Elsevier Science Ltd2015

Brittle versus ductile deformation as the main control of the deep fluid circulation in oceanic crust

Marie Estelle Solange Violay

The brittle to ductile transition may strongly influence hydraulic properties of rocks at the depth and temperature ranges that hydrothermal fluids circulate. To examine this transition in the context of the oceanic crust, we conducted a series of deformat ...

American Geophysical Union2015

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