Corrosion-resistant high entropy alloy with high strength and ductility

被引：201

作者：

Nene, S. S. ^{[1
]}

Frank, M. ^{[1
]}

Liu, K. ^{[1
]}

Sinha, S. ^{[1
]}

Mishra, R. S. ^{[1
]}

McWilliams, B. A. ^{[2
]}

Cho, K. C. ^{[2
]}

机构：

[1] Univ North Texas, Ctr Frict Stir Proc, Dept Mat Sci & Engn, Denton, TX 76207 USA

[2] US Army, Res Lab, Weap & Mat Res Directorate, Aberdeen Proving Ground, MD 21005 USA

来源：

SCRIPTA MATERIALIA | 2019年 / 166卷

关键词：

High entropy alloy (HEA); Cu-HEA; Corrosion resistance; TRIP stress; TENSILE PROPERTIES; GRAIN-SIZE; STEELS; TRIP; TRANSFORMATION; MARTENSITE; BEHAVIOR; DESIGN;

D O I：

10.1016/j.scriptamat.2019.03.028

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High strength materials lack a synergistic combination of mechanical properties and corrosion resistance desired for most structural applications. Phase and grain boundary architecturing is done in the material to attain balance in these properties. A friction stir processed Fe35.5Mn20Co20Cr15Si5Cu1.5 (Cu-HEA) exhibited excellent mechanical properties and high corrosion resistance in synergy. The excellent mechanical properties were attributed to the controlled transformation of ultrafine gamma matrix and epsilon twinning; whereas good corrosion resistance was due to homogenized fine grained gamma microstructure. In short, Cu-HEA design opens a new pathway towards realizing strong and ductile alloys with tunable corrosion resistance by engineering matrix metastability. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：168 / 172

页数：5

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