Origins of strengthening and toughening effects in twinned nanocrystalline alloys of low stacking fault energy with heterogeneous grain structure
Low stacking-fault energy (SFE) nanocrystalline alloys with pre-existing nanotwins (PNTs)
and heterogeneous grain structure (HGS) exhibit exceptional strength-ductility …
and heterogeneous grain structure (HGS) exhibit exceptional strength-ductility …
Evidence for bulk ripplocations in layered solids
Plastically anisotropic/layered solids are ubiquitous in nature and understanding how they
deform is crucial in geology, nuclear engineering, microelectronics, among other fields …
deform is crucial in geology, nuclear engineering, microelectronics, among other fields …
Grain boundary softening from stress assisted helium cavity coalescence in ultrafine-grained tungsten
The formation of helium cavities in coarse-grained materials produces hardening
proportional to the number density and size of the cavities and due to the interaction of …
proportional to the number density and size of the cavities and due to the interaction of …
Stress-assisted grain growth in nanocrystalline metals: Grain boundary mediated mechanisms and stabilization through alloying
The mechanisms of stress-assisted grain growth are explored using molecular dynamics
simulations of nanoindentation in nanocrystalline Ni and Ni-1 at.% P as a function of grain …
simulations of nanoindentation in nanocrystalline Ni and Ni-1 at.% P as a function of grain …
Multiscale analysis of wheel-rail rolling contact wear and damage mechanisms using molecular dynamics and explicit finite elements
K Wang, J Lai, J Xu, T Liao, P Wang, R Chen… - Tribology …, 2023 - Elsevier
As traffic density and axle loads increase, the macroscopic wheel-rail contact can lead to
severe rail wear. This paper constructs a multi-scale analysis framework from macroscopic …
severe rail wear. This paper constructs a multi-scale analysis framework from macroscopic …
Quantifying the influence of twin boundaries on the deformation of nanocrystalline copper using atomistic simulations
Over the past decade, numerous efforts have sought to understand the influence of twin
boundaries on the behavior of polycrystalline materials. Early results suggested that twin …
boundaries on the behavior of polycrystalline materials. Early results suggested that twin …
Molecular dynamics study of deformation behavior of crystalline Cu/amorphous Cu50Zr50 nanolaminates
HY Song, JJ Xu, YG Zhang, S Li, DH Wang, YL Li - Materials & Design, 2017 - Elsevier
Abstract Crystalline/amorphous (C/A) metallic nanolaminates have been increasingly
studied due to its excellent mechanical behaviors. Here, the effects of layer thickness and …
studied due to its excellent mechanical behaviors. Here, the effects of layer thickness and …
On the mechanistic origins of maximum strength in nanocrystalline metals
The maximum strength of polycrystalline metals/alloys has been suggested to occur at
nanoscale grain sizes where the governing deformation mechanism transitions from …
nanoscale grain sizes where the governing deformation mechanism transitions from …
Mechanistic coupling of dislocation and shear transformation zone plasticity in crystalline-amorphous nanolaminates
B Cheng, JR Trelewicz - Acta Materialia, 2016 - Elsevier
The deformation behavior of crystalline-amorphous nanolaminates is explored through
molecular dynamics simulations using nanolaminate models that contain columnar …
molecular dynamics simulations using nanolaminate models that contain columnar …
A taxonomy of grain boundary migration mechanisms via displacement texture characterization
Atomistic simulations provide the most detailed picture of grain boundary (GB) migration
currently available. Nevertheless, extracting unit mechanisms from atomistic simulation data …
currently available. Nevertheless, extracting unit mechanisms from atomistic simulation data …