Correlating dislocation mobility with local lattice distortion in refractory multi-principal element alloys

B Chen, S Li, J Ding, X Ding, J Sun, E Ma - Scripta Materialia, 2023 - Elsevier
Multi-principal element alloys (MPEAs) exhibit different degrees of intrinsic lattice distortion,
which varies with constituent species. Using atomistic simulations, here we found the …

Effect of local lattice distortion on the core structure of edge dislocation in NbMoTaW multi-principal element alloys and the subsystems

D Yang, B Chen, S Li, X Ding, J Sun - Materials Science and Engineering: A, 2022 - Elsevier
Refractory multi-principal element alloys (MPEAs) have attracted much attention as
promising candidate materials for structural applications at elevated temperatures. Several …

Transitions in the morphology and critical stresses of gliding dislocations in multiprincipal element alloys

LTW Fey, S Xu, Y Su, A Hunter, IJ Beyerlein - Physical Review Materials, 2022 - APS
Refractory multiprincipal element alloys (MPEAs) are promising material candidates for high-
temperature, high-strength applications. However, their deformation mechanisms …

Heterogeneous lattice strain strengthening in severely distorted crystalline solids

J Li, Y Chen, Q He, X Xu, H Wang… - Proceedings of the …, 2022 - National Acad Sciences
Multi–principal element alloys (MPEAs) exhibit outstanding mechanical properties because
the core effect of severe atomic lattice distortion is distinctly different from that of traditional …

Decoupling between Shockley partials and stacking faults strengthens multiprincipal element alloys

Z Pei, S Zhang, Y Lei, F Zhang… - Proceedings of the …, 2021 - National Acad Sciences
Mechanical properties are fundamental to structural materials, where dislocations play a
decisive role in describing their mechanical behavior. Although the high-yield stresses of …

Defect accumulation and evolution in refractory multi-principal element alloys

S Zhao, Y Xiong, S Ma, J Zhang, B Xu, JJ Kai - Acta Materialia, 2021 - Elsevier
Refractory multiple principal elemental alloys (MPEAs) hold great promise for structural
materials in future nuclear energy systems. Compared to the extensively studied face …

Multi-scale investigation of short-range order and dislocation glide in MoNbTi and TaNbTi multi-principal element alloys

H Zheng, LTW Fey, XG Li, YJ Hu, L Qi… - npj Computational …, 2023 - nature.com
Refractory multi-principal element alloys (RMPEAs) are promising materials for high-
temperature structural applications. Here, we investigate the role of short-range ordering …

Hierarchical multiscale crystal plasticity framework for plasticity and strain hardening of multi-principal element alloys

Q Fang, W Lu, Y Chen, H Feng, PK Liaw, J Li - Journal of the Mechanics …, 2022 - Elsevier
The multi-principal element alloys (MPEAs) exhibit the unprecedented combinations of the
excellent mechanical properties, especially high strength and good ductility. However, the …

Multiplicity of dislocation pathways in a refractory multiprincipal element alloy

F Wang, GH Balbus, S Xu, Y Su, J Shin, PF Rottmann… - Science, 2020 - science.org
Refractory multiprincipal element alloys (MPEAs) are promising materials to meet the
demands of aggressive structural applications, yet require fundamentally different avenues …

Orientation dependent plasticity of the refractory multi-principal element alloy MoNbTi investigated via micropillar compression

GH Balbus, SI Rao, ON Senkov, EJ Payton - Acta Materialia, 2024 - Elsevier
Refractory multi-principal element alloys (RMPEAs) are promising candidate materials for
use in high temperature structural applications and other extreme environments. Recent …