Optimize the Mechanical Properties of Al0.6CoCrFeNi High-Entropy Alloys by Thermo-Mechanical Processing

被引：7
|
作者：
Yang, Huijun [1 ]
Tan, Yaqin [1 ]
Qiao, Junwei [1 ]
Hawk, Jeffrey A. [2 ]
Zhang, Yong [3 ]
Gao, Michael [2 ,4 ]
Liaw, Peter K. [5 ]
机构：
[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Lab High Entropy Alloys, Taiyuan 030024, Peoples R China
[2] Natl Energy Technol Lab, 1450 Queen Ave SW, Albany, OR 97321 USA
[3] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
[4] Dept Leidos Res Support Team, 1450 Queen Ave SW, Albany, OR 97321 USA
[5] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA
来源：
METALS | 2022年 / 12卷 / 02期
关键词：
high-entropy alloy; thermo-mechanical treatment; microstructure; phase stability; strengthening mechanisms; SOLID-SOLUTION; TENSILE PROPERTIES; STRENGTHENING MECHANISMS; GRAIN-GROWTH; AL ADDITION; MICROSTRUCTURE; DEFORMATION; BEHAVIOR; DUCTILITY; TRANSFORMATION;
D O I：
10.3390/met12020178
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The phase stability, microstructural evolution, and mechanical properties of Al0.6CoCrFeNi high-entropy alloy (HEA) subjected to different thermo-mechanical treatments were systematically investigated in the present study. The face center cubic (FCC) matrix, B2, and minor Body Center Cubic (BCC) phases were observed in the as-cast state. The morphology of the B2 precipitates evolved from needle-like to droplet-shaped when annealed at 900 degrees C, 1000 degrees C, and 1100 degrees C. The resulting yield stress of this FCC/B2 duplex-phase HEA after annealing heat treatments was successfully analyzed based on the contributions from solid solution strengthening, precipitate strengthening, grain boundary hardening, and dislocation hardening.
引用
收藏
页数：18
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