Twin and dislocation induced grain subdivision and strengthening in laser shock peened Ti

X Huang, W Zhu, K Chen, RL Narayan… - International Journal of …, 2022 - Elsevier
A significantly refined microstructure with high twin and dislocation densities is a common
feature in the Ti surface layers subjected to laser shock peening (LSP). In this study, in order …

Transfer or blockage: Unraveling the interaction between deformation twinning and grain boundary in tantalum under shock loading with molecular dynamics

ZC Meng, MM Yang, AH Feng, SJ Qu, F Zhao… - Journal of Materials …, 2023 - Elsevier
Abstract The interaction between {112}< 111> deformation twinning and grain boundary in
coaxial polycrystalline tantalum under shock compression was studied with molecular …

Effect of microstructure evolution on the mechanical properties of a Mg–Y–Nd–Zr alloy with a gradient nanostructure produced via ultrasonic surface rolling processing

L Chen, W Li, Y Sun, M Luo - Journal of Alloys and Compounds, 2022 - Elsevier
Ultrasonic surface rolling processing (USRP) was performed on a Mg–Y–Nd–Zr alloy after
equal-channel angular pressing. The result shown that the surface roughness was …

Evolution of partial dislocation slip–mediated deformation twins in single crystals: a discrete dislocation plasticity model and an analytical approach

C Wang, C Sun, W Cai, L Qian, X Guo… - International Journal of …, 2022 - Elsevier
Deformation twinning is an essential plastic deformation mechanism that realizes the trade–
off between strength and ductility. Twins nucleate and grow by the coordinated slip of partial …

Atomistic migration mechanisms of [12¯ 10] symmetric tilt grain boundaries in magnesium

C Xu, X Tian, W Jiang, Q Wang, H Fan - International Journal of Plasticity, 2022 - Elsevier
Grain boundary (GB) is an important microstructure and plays a vital role in the mechanical
properties of polycrystalline materials by GB migration and sliding. In this work, molecular …

Grain-size effect on the deformation of Mg–3Al–3Sn alloy: Experiments and elastic-viscoplastic self-consistent modeling

G Zhu, L Wang, Y Sun, X Shang, J Wang… - International Journal of …, 2021 - Elsevier
Grain refinement can significantly change the tensile behavior of Mg alloys. The underlying
mechanisms are unclear yet. Here we report that grain refinement of a Mg–3Al–3Sn (wt …

[HTML][HTML] Atomic simulation study on the effect of Y atom and grain boundary on tensile deformation in polycrystalline magnesium alloy

W Mei, Q Li, X Chen - Journal of Materials Research and Technology, 2023 - Elsevier
The deformation of polycrystalline magnesium alloy was studied by molecular dynamics
simulation. The influencing factors of tensile properties and its deformation mechanism were …

[HTML][HTML] Effect of rare earth element yttrium on migration behavior of twin boundary in magnesium alloys: a molecular dynamics study

S Li, HY Song, L Han, WL Su - Journal of Materials Research and …, 2023 - Elsevier
The addition of rare earth (RE) elements can effectively improve the mechanical properties
of Mg alloys, which is attributed to its ability to regulate the plastic deformation behavior of …

A geometrical model for grain boundary migration mediated formation of multifold twins

Y Chen, S Zhao, Q Huang, Q Zhu, K Song… - International Journal of …, 2022 - Elsevier
The formation of multifold twins in nanocrystalline face-centered-cubic metals and alloys
was frequently ascribed to a grain boundary (GB) mediated process. However, the …

Numerical study of deformation behavior of rolled AZ31B plate under cyclic loading in different material orientations based on the EVPSC-TDT model

FH Wang, H Qiao, YQ Wang, J Dong, YY Jiang… - International Journal of …, 2021 - Elsevier
The EVPSC-TDT model is employed to mimic the stabilized stress-strain hysteresis loops of
the rolled AZ31B plate under cyclic loading in different material orientations. The predicted …