On the development of a novel multi-phase high entropy alloy with transformation-induced plasticity effect

被引:22
作者
Radi, Amin [1 ]
Asghari-Rad, Peyman [2 ]
Kim, Hyoung Seop [2 ]
Yapici, Guney Guven [1 ]
机构
[1] Ozyegin Univ, Mech Engn Dept, Istanbul, Turkey
[2] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 37673, South Korea
基金
新加坡国家研究基金会;
关键词
Heterogeneous structure; High entropy alloy (HEA); Transformation-induced plasticity (TRIP); Thermo-mechanical processing; Multi-phase; Mechanical behavior; MECHANICAL-PROPERTIES; GRAIN-SIZE; DEFORMATION; BEHAVIOR; MICROSTRUCTURE; TEMPERATURE; EVOLUTION; PRECIPITATION; FABRICATION; STRENGTH;
D O I
10.1016/j.jallcom.2022.164014
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
In the present work, microstructural evolution, and mechanical behavior of a novel high entropy alloy (HEA) are investigated through thermo-mechanical processing. The homogenized samples possess a single-phase cubic structure with high ductility. The rolled and subsequently annealed samples at various treatment conditions exhibit multi-phase microstructures. This study confirms that the sigma phase contribution becomes more significant on the mechanical response at higher annealing temperatures. Effects of phase distribution and degree of recrystallization on the microstructural evolution are examined in detail to probe the variation in the mechanical response. Samples subjected to annealing exhibit transformation-induced plasticity (TRIP) under plastic deformation. As such, the designed TRIP-assisted multi-phase HEA enables a combination of 1 GPa yield strength and about 10% of strain at failure. (C) 2022 Elsevier B.V. All rights reserved.
引用
收藏
页数:9
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