退火工艺对FeCrMnNiAl0.1高熵合金显微组织及力学性能的影响

doi:10.13251/j.issn.0254-6051.2023.05.038

金属热处理 ›› 2023, Vol. 48 ›› Issue (5): 246-251.DOI: 10.13251/j.issn.0254-6051.2023.05.038

退火工艺对FeCrMnNiAl_0.1高熵合金显微组织及力学性能的影响

郭宝昌, 姜凤阳, 王俊勃, 刘江南, 刘浪浪

西安工程大学材料工程学院, 陕西西安 710048

收稿日期:2022-11-05 修回日期:2023-04-03 出版日期:2023-05-25 发布日期:2023-06-21
通讯作者: 姜凤阳,讲师,博士,E-mail: jfy_123@126.com
作者简介:郭宝昌(1997—),男,硕士研究生,主要研究方向为高熵合金,E-mail: 1721635405@qq.com。
基金资助:
西安市重大成果转化项目(20GXSF0010)

Effect of annealing process on microstructure and mechanical properties of FeCrMnNiAl_0.1 high-entropy alloy

Guo Baochang, Jiang Fengyang, Wang Junbo, Liu Jiangnan, Liu Langlang

College of Materials Engineering, Xi'an Polytechnic University, Xi'an Shaanxi 710048, China

Received:2022-11-05 Revised:2023-04-03 Online:2023-05-25 Published:2023-06-21

摘要/Abstract

摘要： 采用电弧熔炼法制备FeCrMnNiAl_0.1高熵合金,采用SEM、XRD、显微硬度计和万能拉伸试验机,研究退火处理升温速率和保温时间对该五元合金微观组织及力学性能的影响。结果表明,FeCrMnNiAl_0.1高熵合金由FCC相、BCC相和四方结构的Cr₃Ni₂组成。退火保温时间延长导致合金晶格畸变程度增加,BCC组织增加;提高升温速率,BCC组织同样增加,但晶格畸变程度减小。未热处理合金硬度在190 HV左右,高熵合金的显微硬度随退火保温时间的延长而增加,但升温速率提高会使显微硬度逐渐下降。退火时保温时间延长,会使高熵合金的抗拉强度逐渐增大,而延展性逐渐变差;随升温速率增加,合金抗拉强度先减小后增大,延展性变好。

关键词: FeCrMnNiAl_0.1高熵合金, 退火处理, 保温时间, 升温速率, 组织与性能

Abstract: FeCrMnNiAl_0.1 high-entropy alloy was prepared by arc melting method. The effects of annealing treatment heating rate and holding time on microstructure and mechanical properties of the five component alloy were studied by means of SEM, XRD, microhardness tester and universal tensile testing machine. The results show that the FeCrMnNiAl_0.1 high-entropy alloy consists of FCC phase, BCC phase and tetragonal Cr₃Ni₂. The prolongation of annealing holding time leads to an increase in lattice distortion and BCC structure content of the alloy. Increasing the heating rate makes the content of BCC structure also increase, but the degree of lattice distortion decrease. The hardness of the non-heat treated alloy is around 190 HV, and the microhardness of the high-entropy alloy increases with the prolongation of the annealing holding time, but the microhardness gradually decreases with the increase of heating rate. With the prolonging of holding time during annealing, the tensile strength of the high-entropy alloy gradually increases, while the ductility decreases. With the increase of heating rate, the tensile strength of the alloy first decreases and then increases, and the ductility becomes better.

Key words: FeCrMnNiAl_0.1 high-entropy alloy, annealing, holding time, heating rate, microstructure and properties

中图分类号:

TG156.1

郭宝昌, 姜凤阳, 王俊勃, 刘江南, 刘浪浪. 退火工艺对FeCrMnNiAl_0.1高熵合金显微组织及力学性能的影响[J]. 金属热处理, 2023, 48(5): 246-251.

Guo Baochang, Jiang Fengyang, Wang Junbo, Liu Jiangnan, Liu Langlang. Effect of annealing process on microstructure and mechanical properties of FeCrMnNiAl_0.1 high-entropy alloy[J]. Heat Treatment of Metals, 2023, 48(5): 246-251.

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退火工艺对FeCrMnNiAl_0.1高熵合金显微组织及力学性能的影响

Effect of annealing process on microstructure and mechanical properties of FeCrMnNiAl_0.1 high-entropy alloy

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退火工艺对FeCrMnNiAl0.1高熵合金显微组织及力学性能的影响

Effect of annealing process on microstructure and mechanical properties of FeCrMnNiAl0.1 high-entropy alloy

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退火工艺对FeCrMnNiAl_0.1高熵合金显微组织及力学性能的影响

Effect of annealing process on microstructure and mechanical properties of FeCrMnNiAl_0.1 high-entropy alloy