High-temperature Mechanical Properties and Microstructure of ZrTiHfNbMox (x=0.5, 1.0, 1.5) Refractory High Entropy Alloys

International Conference on Computer Information and Automation Engineering

计算机科学;运输工程

Chen, Y.W.^1,2 ; Li, Y.K.^1,2 ; Cheng, X.W.^1,2 ; Wu, C.^1,2 ; Cheng, B.^1,2

School of Materials Science and Engineering, Beijing Institute of Technology, Beijing

100081, China^1

National Key Laboratory of Science and Technology on Materials under Shock and Impact, China^2

关键词: Arc-melting;    Body-centered cubic (bcc) structure;    High entropy alloys;    High temperature;    High temperature mechanical properties;    Intermediate phasis;    Mo element;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/359/1/012033/pdf
DOI  :  10.1088/1757-899X/359/1/012033

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Refractory high entropy alloys (RHEAs), with excellent properties at high temperature, have several applications. In this work, the ZrTiHfNbMox (x=0.5, 1.0, 1.5) alloys were prepared by arc melting. All these alloys form body centered cubic (BCC) structure without other intermediate phases. The Mo element contributes to the strength of alloys at high temperature, but too much of Mo decreases the plasticity severely and enhances the strength. The ZrTiHfNbMo alloy, whose compressive stress is 1099 MPa at 800° C, is a promising material for high-temperature applications.