A novel face-centered-cubic high-entropy alloy strengthened by nanoscale precipitates

SCRIPTA MATERIALIA

卷:172

Article

Qin, Gang¹  Chen, Ruirun^1,2  Liaw, Peter K.³  Gao, Yanfei³  Li, Xiaoqing⁴  Zheng, Huiting¹  Wang, Liang¹  Su, Yanqing¹  Guo, Jingjie¹  Fu, Hengzhi¹ 

[1] Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Heilongjiang, Peoples R China

[2] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Heilongjiang, Peoples R China

[3] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[4] KTH Royal Inst Technol, Dept Mat Sci & Engn, S-10044 Stockholm, Sweden

关键词: High-entropy alloys;    Nanoscale;    Mechanical properties;   

DOI  :  10.1016/j.scriptamat.2019.07.008

来源: Elsevier

【 摘 要 】

A new single-phase face-centered-cubic (FCC) Co9Cr7Cu36Mn25Ni23 [atomic percent, similar hereinafter] high-entropy alloy (HEA) was prepared by arc melting. A uniform distribution of nanometer-sized precipitates was achieved. The tensile yield strength, ultimate tensile strength, and elongation were 401 MPa, 700 MPa, and 36%, respectively. The energy-dispersive spectrometer results showed that the nano-precipitates were rich in Co and Cr elements. Moreover, the crystal-forming behavior and the nanoscale-precipitates-forming mechanism were revealed. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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