[HTML][HTML] Chemical inhomogeneities in high-entropy alloys help mitigate the strength-ductility trade-off

E Ma, C Liu - Progress in Materials Science, 2024 - Elsevier
Metallurgists have long been accustomed to a trade-off between yield strength and tensile
ductility. Extending previously known strain-hardening mechanisms, the emerging multi …

Atomic faulting induced exceptional cryogenic strain hardening in gradient cell–structured alloy

Q Pan, M Yang, R Feng, AC Chuang, K An, PK Liaw… - Science, 2023 - science.org
Coarse-grained materials are widely accepted to display the highest strain hardening and
the best tensile ductility. We experimentally report an attractive strain hardening rate …

Phase transition in medium entropy alloy CoCrNi under quasi-isentropic compression

Z Xie, WR Jian, S Xu, IJ Beyerlein, X Zhang… - International Journal of …, 2022 - Elsevier
Under high strain-rate loading, prominent increases in pressure usually triggers phase
transition (PT), but the concomitant temperature rise may also cause melting. Quasi …

Outstanding fracture toughness combines gigapascal yield strength in an N-doped heterostructured medium-entropy alloy

X Liu, S Zhang, H Feng, J Wang, P Jiang, H Li, F Yuan… - Acta Materialia, 2023 - Elsevier
The superior strength and toughness balance prevails in the face-centered-cubic-structured
high/medium-entropy alloys (H/MEAs) of low strength, while a gain in yield strength is …

Hierarchy modification induced exceptional cryogenic strength, ductility and toughness combinations in an asymmetrical-rolled heterogeneous-grained high …

S Zhong, C Xu, Y Li, W Li, H Luo, R Peng… - International Journal of …, 2022 - Elsevier
The strategy of heterogeneous-structured (HGS) high manganese steels was designed by
asymmetrical-rolling (AR) with annealing to obtain superior mechanical performance for …

Spall response of medium-entropy alloy CrCoNi under plate impact

AR Cui, SC Hu, S Zhang, JC Cheng, Q Li… - International Journal of …, 2023 - Elsevier
Dynamic mechanical properties of high-entropy alloys (HEAs) or medium-entropy alloys
(MEAs) under high strain rate loading are of increasing interest for their promising …

Twinning-induced high impact toughness of titanium alloy at cryogenic temperature

L Lei, Q Zhao, Q Zhu, M Yang, W Yang, W Zeng… - Materials Science and …, 2022 - Elsevier
The impact toughness of titanium alloys is one of the key factors determining their safe
service in cryogenic temperature environments. In this work, the temperature-related impact …

Harnessing instability for work hardening in multi-principal element alloys

B Xu, H Duan, X Chen, J Wang, Y Ma, P Jiang… - Nature Materials, 2024 - nature.com
The strength–ductility trade-off has long been a Gordian knot in conventional metallic
structural materials and it is no exception in multi-principal element alloys. In particular, at …

Towards the best strength, ductility, and toughness combination: High entropy alloys are excellent, stainless steels are exceptional

A Hilhorst, PJ Jacques, T Pardoen - Acta Materialia, 2023 - Elsevier
Remarkable mechanical properties have been reported for CoCrFeMnNi-based high
entropy alloys (HEAs) in recent literature, making these HEAs potentially attractive …

Extensive phase transformation in an equiatomic CrCoNi medium entropy alloy under extreme uniaxial tension

K Jiang, J Li, T Suo - International Journal of Plasticity, 2024 - Elsevier
The dynamic tension behavior of an equiatomic CrCoNi medium entropy alloy (MEA) has
been studied at both room temperature (RT, 298 K) and liquid nitrogen temperature (LNT, 77 …