期刊
SCRIPTA MATERIALIA
卷 166, 期 -, 页码 168-172出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.03.028
关键词
High entropy alloy (HEA); Cu-HEA; Corrosion resistance; TRIP stress
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.
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