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 …

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 …

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 …

Cooperative dislocations for pressure-dependent sequential deformation of multi-principal element alloys under shock loading

F Zhang, Y Ren, Z Pei, Q Gao, Z Lu, B Wang, Y Xue… - Acta Materialia, 2024 - Elsevier
Multi-principal element alloys (MPEAs) are promising materials for structural applications
under extreme conditions. Their outstanding mechanical properties are closely related to the …

Complex strengthening mechanisms in the NbMoTaW multi-principal element alloy

XG Li, C Chen, H Zheng, Y Zuo, SP Ong - npj Computational Materials, 2020 - nature.com
Refractory multi-principal element alloys (MPEAs) have exceptional mechanical properties,
including high strength-to-weight ratio and fracture toughness, at high temperatures. Here …

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 …

Maximum strength and dislocation patterning in multi–principal element alloys

P Cao - Science advances, 2022 - science.org
Multi–principal element alloys (MPEAs) containing three or more components in high
concentrations render a tunable chemical short-range order (SRO). Leveraging large-scale …

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 …

Grain-size effects on the deformation in nanocrystalline multi-principal element alloy

A Roy, R Devanathan, DD Johnson… - Materials Chemistry and …, 2022 - Elsevier
Multi-principal element alloys (MPEAs) continue to garner great interest due to their
potentially remarkable mechanical properties, especially at elevated temperatures for key …