Dual-phase high-entropy alloys for high-temperature structural applications

被引：186

作者：

Lim, Ka Ram ^{[1
]}

Lee, Kwang Seok ^{[2
]}

Lee, Jun Seo ^{[1
]}

Kim, Jin Yeon ^{[3
,4
,5
]}

Chang, Hye Jung ^{[3
]}

Na, Young Sang ^{[1
]}

机构：

[1] Korea Inst Mat Sci, Metall Mat Div, 797 Changwondaero, Chang Won 51508, Gyeongnam, South Korea

[2] Korea Inst Mat Sci, Mat Deformat Dept, 797 Changwondaero, Chang Won 51508, Gyeongnam, South Korea

[3] Korea Inst Sci & Technol, Adv Anal Ctr, 5,Hwarang Ro 14 Gil, Seoul 136791, South Korea

[4] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea

[5] Seoul Natl Univ, Res Inst Adv Mat, Seoul 151744, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 728卷

关键词：

Casting; Microscopy and microanalysis techniques; High-entropy alloys; Mechanical properties; Phase transformations; MECHANICAL-PROPERTIES; MICROSTRUCTURE; EXPLORATION; BEHAVIOR;

D O I：

10.1016/j.jallcom.2017.09.089

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The dual-phase AlCoCrFeNi alloy exhibits excellent specific strength in the 7730-873 K temperature range. However, the phase transformation taking place above 773 K hinders its structural use at higher temperatures. In the present study, the temperature dependence of the specific strength of the AlCoCrFeNi alloy has been examined from a microstructural point of view. One of the key findings of this work is that the high-temperature phase stability of the dual-phase alloy is strongly affected by its microstructural morphology; this finding provides new insights into the application of high-entropy alloys as high-temperature structural materials, for instance in aerospace engine components. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：1235 / 1238

页数：4

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