Microstructural control and properties optimization of high-entrop alloys

被引：30

作者：

Zhang, Yong ^{[1
]}

Peng, Wei Jie ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

来源：

2011 CHINESE MATERIALS CONFERENCE | 2012年 / 27卷

关键词：

High-entropy alloys; substitutional alloys; solid-solution; Tensile properties; Magnetic properties; BULK METALLIC GLASSES; BEHAVIOR; ELEMENTS;

D O I：

10.1016/j.proeng.2011.12.568

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A criterion for the solid-solution phase formation in the high-entropy alloys was proposed based on two parameters Omega>1.1 and delta<6.6%. Here, Omega = T-m Delta S-mix/vertical bar Delta H-mix vertical bar , and delta = root Sigma(n)(i=1) ci(1 - ri / (r) over bar )(2). The high-entropy alloys of TiZrNb, CoCrFeNiCu, and CoFeNi(AlSi)(x) (X= 0.2, 0.5) were prepared by arc-melting and copper mold casting. It was found that the tensile yield strength of the TiZrNb alloy was 872MPa, and tensile modulus was 45GPa. The properties of CoCrFeNiCu alloys can be optimized by multiple processing, such as cold rolling, annealing, and water quenching. Based on the HE(high-entropy) conception, a soft magnetic alloy CoFeNiAlxSix was developed. (C) 2011 Published by Elsevier Ltd.

引用

页码：1169 / 1178

页数：10

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