The effects of interstitial oxygen on mechanical properties of TiZrNb medium-entropy alloy over a wide temperature range

Wang，Shubin1; He，Yi1; Zhang，Xianbing2; Wang，Junfeng1; Wu，Mingxu3; Shu，Da1; Tang，Huaping4; Sun，Baode1

2024-06-25

10.1016/j.jallcom.2024.174394

Journal of Alloys and Compounds   影响因子和分区

0925-8388

Interstitial oxygen plays an important role in the microstructure and mechanical properties of recently developed refractory high-entropy or complex concentrated alloys. However, the mechanical properties of the oxygen-doped complex concentrated refractory alloy over a wide temperature range remain unclear. In this work, the effect of interstitial oxygen on the mechanical behavior of TiZrNb medium-entropy alloys (MEAs) has been investigated. At room temperature (RT), the interstitial oxygen improves the yield strength and tensile ductility owing to interstitial solid-solution strengthening and strain-hardening enhancement. However, simultaneous improvement of the RT strength-ductility by adding interstitial oxygen comes at the expense of increasing the ductile-brittle transition temperature (DBTT). Furthermore, the high-temperature yield strength of TiZrNb alloy can be improved up to 800 °C with the addition of 2 at% oxygen. The results above provide valuable insight into the mechanical properties of TiZrNb MEA, which would contribute to optimizing the high-performance refractory complex concentrated alloys in various applications.

Ductile-brittle transition Mechanical properties Oxygen Refractory medium-entropy alloys Wide temperature range

SCI ; EI

英语

其他

MATERIALS SCIENCE

2-s2.0-85189658239

Scopus

1.Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming and State Key Lab of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai,200240,China
2.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Department of Materials,AECC Commercial Aircraft Engine CO.,LTD,Shanghai,201100,China
4.Ji Hua Laboratory,Foshan,Guangdong,528200,China

Wang，Shubin,He，Yi,Zhang，Xianbing,et al. The effects of interstitial oxygen on mechanical properties of TiZrNb medium-entropy alloy over a wide temperature range[J]. Journal of Alloys and Compounds,2024,989.

Wang，Shubin.,He，Yi.,Zhang，Xianbing.,Wang，Junfeng.,Wu，Mingxu.,...&Sun，Baode.(2024).The effects of interstitial oxygen on mechanical properties of TiZrNb medium-entropy alloy over a wide temperature range.Journal of Alloys and Compounds,989.

Wang，Shubin,et al."The effects of interstitial oxygen on mechanical properties of TiZrNb medium-entropy alloy over a wide temperature range".Journal of Alloys and Compounds 989(2024).