Formation and Mechanical Behavior of Body-Centered-Cubic Zr(Hf)-Nb-Ti Medium-Entropy Alloys

Mingkang Wang, Junhao Yuan, Fengyun Yu, Qing Wang*, Yufeng Liu, Zhongwei Zhang, Chuang Dong, Peter K. Liaw

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

4 引用 (Scopus)

摘要

The present work investigated the formation and mechanical behavior of body-centered-cubic (BCC) Zr(Hf)-Nb-Ti medium entropy alloys (MEAs), in which three series of alloys, [Zr-Zr14](Zr,Nb)3, [Ti-Zr14](Ti,Nb)3, and [Ti-(Hf,Zr)14](Nb)3, were designed by the cluster formula approach. With increasing the Nb content, the BCC-β structural stability of the [Zr-Zr14](Zr,Nb)3 alloys would be enhanced, as evidenced by the BCC [Zr-Zr14](Nb)3 (Zr83.33Nb16.67 in atomic percent at. pct) alloy containing a minor amount of ω phase. An appropriate content of Ti addition can further improve the BCC-β stability of [Ti-Zr14](Nb3) (Zr77.77Ti5.56Nb16.67) alloy without any ω precipitation. The further substitution of Hf/Ti for the Zr could also render the [Ti-Zr8Hf4Ti2](Nb3) (Zr44.44 Hf22.22Ti16.67Nb16.67) alloy with a single BCC structure. All these BCC MEAs exhibit prominent mechanical properties, as exemplified by the [Ti-Zr8Hf6](Nb3) (Zr44.44Hf33.33Ti5.56Nb16.67) with a higher yield strength of 662 MPa, a larger elongation to fraction of 15.2 pct, and a lower Young’s modulus of 71 GPa.

源语言英语
页(从-至)2100-2110
页数11
期刊Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
52
6
DOI
出版状态已出版 - 6月 2021

指纹

探究 'Formation and Mechanical Behavior of Body-Centered-Cubic Zr(Hf)-Nb-Ti Medium-Entropy Alloys' 的科研主题。它们共同构成独一无二的指纹。

引用此

Wang, M., Yuan, J., Yu, F., Wang, Q., Liu, Y., Zhang, Z., Dong, C., & Liaw, P. K. (2021). Formation and Mechanical Behavior of Body-Centered-Cubic Zr(Hf)-Nb-Ti Medium-Entropy Alloys. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 52(6), 2100-2110. https://doi.org/10.1007/s11661-021-06263-z