Structural evolutions of metallic materials processed by severe plastic deformation

Y Cao, S Ni, X Liao, M Song, Y Zhu - Materials Science and Engineering: R …, 2018 - Elsevier
Abstract Bulk nanostructured (ns)/ultrafine-grained (UFG) metallic materials possess very
high strength, making them attractive for high strength, lightweight and energy efficient …

Mechanisms of deformation and ductility in tungsten–A review

BG Butler, JD Paramore, JP Ligda, C Ren… - International Journal of …, 2018 - Elsevier
The physical, chemical, and mechanical properties of tungsten are at the far limits of all
engineering materials. These unique properties, particularly ultra-high strength, density, and …

Atomistic simulations of dislocation mobility in refractory high-entropy alloys and the effect of chemical short-range order

S Yin, Y Zuo, A Abu-Odeh, H Zheng, XG Li… - Nature …, 2021 - nature.com
Refractory high-entropy alloys (RHEAs) are designed for high elevated-temperature
strength, with both edge and screw dislocations playing an important role for plastic …

Hierarchical microstructures enabled excellent low-temperature strength-ductility synergy in bulk pure tungsten

XF Xie, ZM Xie, R Liu, QF Fang, CS Liu, WZ Han, X Wu - Acta Materialia, 2022 - Elsevier
Refractory tungsten (W) is notoriously brittle at room temperature, which restricts its
workability and narrows the temperature range of critical applications. Here, we report a …

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 …

Abnormal hardening and amorphization in an FCC high entropy alloy under extreme uniaxial tension

K Jiang, Q Zhang, J Li, X Li, F Zhao, B Hou… - International Journal of …, 2022 - Elsevier
Ever more extreme environments in advancing industrial applications motivate efforts to
design new generation of alloys with excellent mechanical properties. High entropy alloys …

Unusual activated processes controlling dislocation motion in body-centered-cubic high-entropy alloys

B Chen, S Li, H Zong, X Ding… - Proceedings of the …, 2020 - National Acad Sciences
Atomistic simulations of dislocation mobility reveal that body-centered cubic (BCC) high-
entropy alloys (HEAs) are distinctly different from traditional BCC metals. HEAs are …

A hierarchically correlated flow defect model for metallic glass: Universal understanding of stress relaxation and creep

Q Hao, GJ Lyu, E Pineda, JM Pelletier, YJ Wang… - International Journal of …, 2022 - Elsevier
Due to the structurally disordered arrangement of atoms and deviation from thermodynamic
equilibrium, the physical and mechanical properties of metallic glasses can vary with time …

Dislocation-mediated migration of the α/β interfaces in titanium

JY Zhang, ZP Sun, D Qiu, FZ Dai, YS Zhang, D Xu… - Acta Materialia, 2023 - Elsevier
Interphase boundaries are essential in the deformation and phase transformations in
titanium (Ti) alloys. While static structures of semicoherent α/β interfaces in various Ti alloys …

Atomistically-informed hardening and kinetics models of helium bubble in irradiated tungsten

C Ji, J Hu, Z Zhuang, Y Cui - International Journal of Plasticity, 2023 - Elsevier
In fusion reactor environment, helium bubble acts as a crucial inducement to the
performance degradation of plasma facing tungsten, leading to irradiation hardening and …