Effect of Annealing on Phase formation and their Correlation with Magnetic Characteristics of TiFeNiCrCo HEA

被引：15
作者：
Mishra, Rajesh K. [1 ]
Shahi, Rohit R. [1 ]
机构：
[1] Motilal Nehru Natl Inst Technol Allahabad, Dept Phys, Allahabad 211004, Uttar Pradesh, India
来源：
MATERIALS TODAY-PROCEEDINGS | 2019年 / 18卷
关键词：
High Entropy Alloys; Mechanical alloying; Magnetic characteristics; HIGH-ENTROPY ALLOYS; SOLID-SOLUTION; MULTICOMPONENT; MICROSTRUCTURE; BEHAVIOR;
D O I：
10.1016/j.matpr.2019.06.610
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An equiatomic TiFeNiCrCo high entropy alloy (HEA) has been synthesized through mechanical alloying (MA) and the effect of annealing on phase evolution and their correlation with magnetic behavior is investigated. It has been found that FCC and BCC phases are formed at as synthesized state. DSC analysis confirms that the synthesized phases are stable up to 767 degrees C. This is also confirmed by annealing of the synthesized HEA at different temperatures (500 and 700 degrees C) under different conditions (open air and vacuum). Open air annealed HEAs exhibits an oxide phase along with the synthesized phases. The value of Ms and Hc for synthesized TiFeNiCrCo HEA is found to be11.96emu/g and 152.320e respectively. Moreover, after vacuum annealing at 500 and 700 degrees C the value of Ms and Hc are found similar to the synthesized HEA. However, open air annealed sample exhibits high value of Ms and Hc as compared to the synthesized sample. For open air annealed at 700 degrees C, the value of Ms is increased significantly up to 21.93emu/g from 11.96emu/g. The present study describes that the magnetic behavior of the synthesized TiFeNiCrCo HEA can be improved after annealing at different temperatures under different conditions. (C) 2019 Elsevier Ltd. All rights reserved.
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收藏
页码：1422 / 1429
页数：8
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