Influence of Annealing on the Microstructures and Oxidation Behaviors of Al8(CoCrFeNi)92, Al15(CoCrFeNi)85, and Al30(CoCrFeNi)70 High-Entropy Alloys

被引：47

作者：

Butler, Todd M. ^{[1
,2
]}

Weaver, Mark L. ^{[2
]}

机构：

[1] UES Inc, 4401 Dayton Xenia Rd, Dayton, OH 45432 USA

[2] Univ Alabama, Dept Met & Mat Engn, Tuscaloosa, AL 35487 USA

来源：

METALS | 2016年 / 6卷 / 09期

基金：

美国国家科学基金会;

关键词：

high-entropy; oxidation; multi-component alloys; MECHANICAL-PROPERTIES; RESISTANCE;

D O I：

10.3390/met6090222

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The understanding of the oxidation behaviors of as-cast and annealed high-entropy alloys (HEAs) is currently limited. This work systematically investigates the influence of annealing on the microstructures and oxidation behaviors of AlCoCrFeNi-based HEAs. Annealing was found to alter the distribution of Al-rich phases which caused a change in the oxidation mechanisms. In general, all three of the investigated HEAs displayed some degree of transient oxidation at 1050 degrees C that was later followed by protective, parabolic oxide growth. The respective oxidation behaviors are discussed relative to existing oxide formation models for Ni-Cr-Al alloys.

引用

页数：11

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