Microstructure, mechanical properties and oxidation behavior of NbTaTi and NbTaZr refractory alloys

ON Senkov, J Gild, TM Butler - Journal of Alloys and Compounds, 2021 - Elsevier
This study reports the microstructure, phase composition, mechanical properties and
oxidation behavior of NbTaTi and NbTaZr ternary equiatomic alloys. These ternary …

Phase stability of a ductile single-phase BCC Hf0. 5Nb0. 5Ta0. 5Ti1. 5Zr refractory high-entropy alloy

JQ Yao, XW Liu, N Gao, QH Jiang, N Li, G Liu… - Intermetallics, 2018 - Elsevier
High-entropy alloys (HEAs) have attracted much attention since they can possess some
unique properties. By adjusting their multi-principal elements, some systems with body …

Size-dependent plasticity in an Nb25Mo25Ta25W25 refractory high-entropy alloy

Y Zou, S Maiti, W Steurer, R Spolenak - Acta Materialia, 2014 - Elsevier
High-entropy alloys (HEAs) are evolving multi-component intermetallic systems, wherein
multiple principal elements tend to form single solid-solution-like phases with a strong …

Enhancement of strength-ductility balance of heavy Ti and Al alloyed FeCoNiCr high-entropy alloys via boron doping

Y Qi, T Cao, H Zong, Y Wu, L He, X Ding, F Jiang… - Journal of Materials …, 2021 - Elsevier
As one of the most effective mechanisms, precipitation-hardening is widely used to
strengthen high-entropy alloys. Yet, heavy precipitation-hardened high-entropy alloys …

[HTML][HTML] Novel metastable engineering in single-phase high-entropy alloy

R Wang, Y Tang, S Li, H Zhang, Y Ye, Y Ai, S Bai - Materials & Design, 2019 - Elsevier
To improve the mechanical properties of high-entropy alloys (HEAs) and expand the
application range of metastable engineering, the NbZrTiTa alloy was researched. The …

Microstructural design for improving ductility of an initially brittle refractory high entropy alloy

V Soni, ON Senkov, B Gwalani, DB Miracle… - Scientific reports, 2018 - nature.com
Typically, refractory high-entropy alloys (RHEAs), comprising a two-phase ordered B2+ BCC
microstructure, exhibit extraordinarily high yield strengths, but poor ductility at room …

Designing nanoparticles-strengthened high-entropy alloys with simultaneously enhanced strength-ductility synergy at both room and elevated temperatures

JX Hou, SF Liu, BX Cao, JH Luan, YL Zhao, Z Chen… - Acta Materialia, 2022 - Elsevier
Developing microstructurally stable alloys with the outstanding strength-ductility combination
at both room temperature and elevated temperatures is highly desirable for advanced …

Phase transformations of HfNbTaTiZr high-entropy alloy at intermediate temperatures

SY Chen, Y Tong, KK Tseng, JW Yeh, JD Poplawsky… - Scripta Materialia, 2019 - Elsevier
The strong and ductile single-phase body-centered-cubic (BCC) HfNbTaTiZr refractory high-
entropy alloy (RHEA) is a potential structural material for high-temperature applications …

[HTML][HTML] Optimization of conflicting properties via engineering compositional complexity in refractory high entropy alloys

IH Kim, HS Oh, KS Lee, ES Park - Scripta Materialia, 2021 - Elsevier
The strength-ductility (or thermal conductivity) trade-off is unavoidable in most conventional
alloys due to the limited composition space. Herein, we propose a mechanism-based design …

[HTML][HTML] Microstructure and mechanical properties of Nb–Ti–V–Zr refractory medium-entropy alloys

Y Jia, L Zhang, P Li, X Ma, L Xu, S Wu, Y Jia… - Frontiers in …, 2020 - frontiersin.org
Low-density refractory medium entropy alloys (NbTiVZr, Nb0. 5TiVZr, and NbTiV) were
produced by vacuum arc melting, then heat-treated at 1,200° C for 1 h, water quenched, and …