Beyond Orowan hardening: Mapping the four distinct mechanisms associated with dislocation-precipitate interaction

S Peng, Z Wang, J Li, Q Fang, Y Wei - International Journal of Plasticity, 2023 - Elsevier
The conventional role played by precipitates in crystalline solids is in blocking the motion of
dislocations and for consequentially hardening, a mechanism attributed to Orowan's finding …

Atomistic simulation studies of Ni-based superalloys

R Wu, Y Zhao, Q Yin, J Wang, X Ai, Z Wen - Journal of Alloys and …, 2021 - Elsevier
Ni-based superalloys are key materials for hot-end components of aeroengines.
Considering the importance and complex of aeroengine components, the understanding on …

Fundamental mechanisms for irradiation-hardening and embrittlement: a review

X Xiao - Metals, 2019 - mdpi.com
It has long been recognized that exposure to irradiation environments could dramatically
degrade the mechanical properties of nuclear structural materials, ie, irradiation-hardening …

An atomistic-to-microscale computational analysis of the dislocation pileup-induced local stresses near an interface in plastically deformed two-phase materials

Y Peng, R Ji, T Phan, W Gao, VI Levitas, L Xiong - Acta Materialia, 2022 - Elsevier
Taking the two-phase material as a model system, here we perform atomistic-to-microscale
computational analysis on how the dislocations pileup is formed at a buried interface …

Interaction of extended dislocations with nanovoid clusters

AM Roach, S Xu, DJ Luscher, DS Gianola… - International Journal of …, 2023 - Elsevier
Voids of nanoscale dimensions in irradiated metals can act as obstacles to dislocation
motion and cause strengthening. In this work, nanovoid strengthening and the influences of …

Influence of scandium addition on microstructure and mechanical properties in nickel-based superalloys: an integrated multiscale modeling and experimental …

L Li, J Li, F Liu, L Tan, Q Fang, Y Wei - International Journal of Plasticity, 2023 - Elsevier
Microalloying has long been recognized as an effective method for improving the
mechanical properties of metallic materials and developing new ones. In this study, we …

Study of the dynamic impact spalling of ductile materials based on Gurson-type phase-field model

H Han, T Wang, G Huang, Z Liu, Z Zhuang - International Journal of …, 2024 - Elsevier
The formation of void damage and spalling failure in ductile metallic materials under strong
impact is a well-established phenomenon. In aerospace and defense technology …

Influence of kinetic effect on interaction between edge dislocation and irradiated dislocation loops in BCC Tantalum

Q Bao, Z Li, B Zhu, S Liang, J Zhu, M Huang… - International Journal of …, 2023 - Elsevier
In this paper, the interaction between an edge dislocation and irradiation< 100> sessile self-
interstitial atom (SIA) type dislocation loops (DLs) is studied by atomistic simulations in BCC …

The effect of Ag on the tensile strength and fracture toughness of novel Al-Mg-Zn alloys

H Liu, Z Zhang, D Zhang, J Zhang - Journal of Alloys and Compounds, 2022 - Elsevier
In this study, the effect of trace addition of Ag on the microstructure, tensile strength, and
fracture toughness of novel Al-Mg-Zn alloys was evaluated using transmission electron …

Atomic structure, stability, and dissociation of dislocations in cadmium telluride

J Li, K Luo, Q An - International Journal of Plasticity, 2023 - Elsevier
Dislocation plays a crucial role in many material properties of semiconductors, ranging from
plastic deformation to electronic transport. But the dislocation structures and reactions …