Revealing the Precipitation Sequence with Aging Temperature in a Non-equiatomic AlCoCrFeNi High Entropy Alloy

被引：12
|
作者：
Nandal, Vickey [1 ]
Harun, Bushra [1 ]
Sarvesha, R. [2 ]
Singh, Sudhanshu S. [2 ]
Huang, E-Wen [3 ]
Chang, Yao-Jen [4 ]
Yeh, An-Chou [4 ]
Jain, Jayant [1 ]
Neelakantan, Suresh [1 ]
机构：
[1] Indian Inst Technol Delhi, Dept Mat Sci & Engn, New Delhi 110016, India
[2] Indian Inst Technol Kanpur, Dept Mat Sci & Engn, Kanpur 208016, Uttar Pradesh, India
[3] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan
[4] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2022年 / 53卷 / 01期
关键词：
NI; AL; MICROSTRUCTURES; STRENGTH; BEHAVIOR; NI3AL;
D O I：
10.1007/s11661-021-06528-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sequential transformation in precipitate structure from L1(2) -> B2-NiAl precipitate has been observed for Al0.5Co1.5CrFeNi1.5 alloy with the increase in aging temperature. At 650 degrees C, the FCC matrix contained L1(2) precipitates (gamma '), which were transformed into ordered B2 structure precipitate at 750 degrees C. A coarser and more stable B2-NiAl rich precipitate has been observed for higher aging temperature (850 degrees C). This transformation is attributed to the higher thermodynamic stability of B2-NiAl precipitates overcoming the nucleation barrier at higher temperatures.
引用
收藏
页码：314 / 321
页数：8
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