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 …
Dislocation nucleation in Al single crystal at shear parallel to (111) plane: Molecular dynamics simulations and nucleation theory with artificial neural networks
AE Mayer, VS Krasnikov, VV Pogorelko - International Journal of Plasticity, 2021 - Elsevier
We develop the theory of homogeneous nucleation of dislocations, which predicts plasticity
incipience in FCC single crystal using material properties at elastic stage. In contrast to …
incipience in FCC single crystal using material properties at elastic stage. In contrast to …
The interaction mechanisms between dislocations and nano-precipitates in CuFe alloys: A molecular dynamic simulation
H Bao, H Xu, Y Li, H Bai, F Ma - International Journal of Plasticity, 2022 - Elsevier
Molecular dynamics (MD) simulations are employed to study the interaction mechanisms
between dislocations and nano-precipitates in CuFe alloys. On one hand, the critical shear …
between dislocations and nano-precipitates in CuFe alloys. On one hand, the critical shear …
Dynamics of twin boundaries in ferromagnetic shape memory alloys
Combined experimental and theoretical investigation of discrete twin boundary motion in
ferromagnetic shape memory alloys 10M NiMnGa is presented. Motion of individual …
ferromagnetic shape memory alloys 10M NiMnGa is presented. Motion of individual …
Formation mechanisms of high-density growth twins in aluminum with high stacking-fault energy
Nanotwins readily form in numerous face-centered-cubic (fcc) metals with low stacking-fault
energy (SFE). However, growth twins rarely form in Al due to its high SFE,∼ 120–165 …
energy (SFE). However, growth twins rarely form in Al due to its high SFE,∼ 120–165 …
Homogeneous nucleation of dislocations in copper: Theory and approximate description based on molecular dynamics and artificial neural networks
AE Mayer, VS Krasnikov, VV Pogorelko - Computational Materials Science, 2022 - Elsevier
Nucleation of dislocations in a homogeneous crystal lattice is relevant for small-scale
plasticity or ultra-fast loading. Previously, we improved the dislocation nucleation theory and …
plasticity or ultra-fast loading. Previously, we improved the dislocation nucleation theory and …
Selective excitation of two-wave structure depending on crystal orientation under shock compression
Single crystals subjected to shock compression exhibit responses with distinct two-wave
structures for certain crystal orientations. However, little is known to date regarding how the …
structures for certain crystal orientations. However, little is known to date regarding how the …
Unraveling deformation mechanisms around FCC and BCC nanocontacts through slip trace and pileup topography analyses
Nanocontact loadings offer the potential to investigate crystal plasticity from surface slip
trace emissions and distinct pileup patterns where individual atomic terraces arrange into …
trace emissions and distinct pileup patterns where individual atomic terraces arrange into …
Investigation on dislocation-based mechanisms of void growth and coalescence in single crystal and nanotwinned nickels by molecular dynamics simulation
Y Zhang, S Jiang - Philosophical Magazine, 2017 - Taylor & Francis
Molecular dynamics simulations were conducted to elucidate dislocation mechanisms of the
void growth and coalescence in single crystal and nanotwinned nickels subjected to uniaxial …
void growth and coalescence in single crystal and nanotwinned nickels subjected to uniaxial …
Kinetics of a fast moving twin boundary in nickel
NP Daphalapurkar, JW Wilkerson, TW Wright… - Acta materialia, 2014 - Elsevier
A complete description of high-rate dynamic deformation of metals demands, in part, the
fundamental understanding and characterization of twin boundary (TB) kinetics. We use …
fundamental understanding and characterization of twin boundary (TB) kinetics. We use …