Microstructure and Mechanical Properties of theTi62Nb12Mo12Ta12W2 Refractory High Entropy Alloy Prepared through Spark Plasma Sintering

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外文摘要：A refractory high entropy alloy Ti62Nb12Mo12Ta12W2 was prepared by mechanical alloying and spark plasma sintering.The microstructure and mechanical properties of the Ti62Nb12Mo12Ta12W2 alloy were analyzed.The experimental results show that the microstructure of the alloy is composed of two BCC phases,an FCC precipitated phase,and the precipitated phase which is a mixture of TiC,TiN and TiO.The alloy exhibits good room temperature compressive properties.The plasticity of the sample sintered at 1550 ℃ can reach 10.8％ ,and for the sample sintered at 1600 ℃,the yield strength can be up to 2032 MPa,in the meantime the plasticity is 9.4％ .The alloy also shows high strength at elevated temperature.The yield strength of the alloy exceeds 420 MPa at 900 ℃,and value of which is still above 200 MPa when the test temperature reaches 1000 ℃.Finally,the compressive yield strength model at room temperature is constructed.The prediction error of the model ranges from-7.9％ to-12.4％ ,expressing fair performance.

外文关键词：

Refractory high-entropy alloy(RHEA)Mechanical alloyingMechanical propertiesModelSpark plasma sintering

作者：

Zirui Chen、Liyuan Wang、Jiayu Zhao、Guanhua Cui、Zhuo Gao、Zhiyuan Fan、Xiaohui Shi、Junwei Qiao

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作者单位：

College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China

基金：

Fundamental Research Program of Shanxi ProvinceInnovation and Entrepreneurship Training Program for College Students in Shanxi ProvinceResearch Project Supported by Shanxi Scholarship Council of ChinaNational Natural Science Foundation of China

项目编号：

202203021211130202201192023-06851801132

出版年：

2024

DOI：

10.1007/s40195-024-01718-9

金属学报(英文版)

中国金属学会

金属学报(英文版)

CSTPCD

影响因子：0.77

ISSN：1006-7191

年,卷(期)：2024.37(8)