High entropy alloys: A focused review of mechanical properties and deformation mechanisms

EP George, WA Curtin, CC Tasan - Acta Materialia, 2020 - Elsevier
The high-entropy alloy (HEA) concept was based on the idea that high mixing entropy can
promote formation of stable single-phase microstructures. During the past 15 years, various …

Natural-mixing guided design of refractory high-entropy alloys with as-cast tensile ductility

S Wei, SJ Kim, J Kang, Y Zhang, Y Zhang, T Furuhara… - Nature Materials, 2020 - nature.com
Metallic alloys containing multiple principal alloying elements have created a growing
interest in exploring the property limits of metals and understanding the underlying physical …

Mechanical instability and tensile properties of TiZrHfNbTa high entropy alloy at cryogenic temperatures

S Wang, M Wu, D Shu, G Zhu, D Wang, B Sun - Acta Materialia, 2020 - Elsevier
The equiatomic TiZrHfNbTa alloy is one of the few refractory high entropy alloys that exhibit
tensile ductility at room temperature, the deformation of which is only dominated by …

Simultaneous enhancement of strength and ductility in a NiCoCrFe high-entropy alloy upon dynamic tension: Micromechanism and constitutive modeling

TW Zhang, SG Ma, D Zhao, YC Wu, Y Zhang… - International Journal of …, 2020 - Elsevier
The deformation responses of NiCoCrFe high-entropy alloy (HEA) under quasi-static (1×
10− 4-1× 10− 1/s) and dynamic (1,000–6,000/s) tension were investigated. A good …

Nitrogen induced heterogeneous structures overcome strength-ductility trade-off in an additively manufactured high-entropy alloy

M Song, R Zhou, J Gu, Z Wang, S Ni, Y Liu - Applied Materials Today, 2020 - Elsevier
The strength-ductility trade-off has been the long-standing barrier in the pursuit of high-
performance structural materials. Here, by exploiting the merit of interstitial nitrogen, a novel …

Unraveling the dislocation–precipitate interactions in high-entropy alloys

J Li, H Chen, Q Fang, C Jiang, Y Liu, PK Liaw - International Journal of …, 2020 - Elsevier
The precipitates play a significant role in not only enhancing the strength, but also
maintaining the high toughness in alloys. However, the interactions of the nanoscale …

Crystal–glass high‐entropy nanocomposites with near theoretical compressive strength and large deformability

G Wu, S Balachandran, B Gault, W Xia, C Liu… - Advanced …, 2020 - Wiley Online Library
High‐entropy alloys (HEAs) and metallic glasses (MGs) are two material classes based on
the massive mixing of multiple‐principal elements. HEAs are single or multiphase crystalline …

Strengthening CoCrNi medium-entropy alloy by tuning lattice defects

H Huang, J Wang, H Yang, S Ji, H Yu, Z Liu - Scripta Materialia, 2020 - Elsevier
The CrCoNi medium-entropy alloy is not fully utilized at room temperature circumstance due
to its low strength, despite excellent cryogenic mechanical properties. Here we report that, a …

Effect of lattice distortion on the diffusion behavior of high-entropy alloys

R Wang, Y Tang, S Li, Y Ai, Y Li, B Xiao, X Liu… - Journal of Alloys and …, 2020 - Elsevier
The presence and effect of lattice distortion have become the most concerned issue of high-
entropy alloys (HEAs) recently. To address this issue, TiZrNbTa (TZNT) HEAs were …

Snoek-type damping performance in strong and ductile high-entropy alloys

Z Lei, Y Wu, J He, X Liu, H Wang, S Jiang, L Gu… - Science …, 2020 - science.org
Noise and mechanical vibrations not only cause damage to devices, but also present major
public health hazards. High-damping alloys that eliminate noise and mechanical vibrations …