FeCoCrNiMn高熵合金大形变冷轧板再结晶退火过程中的组织演变

doi:10.13251/j.issn.0254-6051.2022.07.029

金属热处理 ›› 2022, Vol. 47 ›› Issue (7): 163-167.DOI: 10.13251/j.issn.0254-6051.2022.07.029

FeCoCrNiMn高熵合金大形变冷轧板再结晶退火过程中的组织演变

国春艳¹, 刘玉宝², 杨鹏飞², 李园², 吕卫东², 高日增², 张洋², 侯复生²

1.包头铁道职业技术学院机械与电气系, 内蒙古包头 014000;
2.包头稀土研究院白云鄂博稀土资源研究与综合利用国家重点实验室, 内蒙古包头 014030

收稿日期:2022-01-30 修回日期:2022-05-10 出版日期:2022-07-25 发布日期:2022-08-12
通讯作者: 刘玉宝,高级工程师,硕士,E-mail: liuyubao1985@ 126.com
作者简介:国春艳(1985—),女,副教授,硕士,主要研究方向为稀土材料加工,E-mail: guochunyan1010@ 163.com。
基金资助:
内蒙古自治区重大专项(ZDZX2018032)

Recrystallizing annealed microstructure evolution of severe cold rolled FeCoCrNiMn high entropy alloy

Guo Chunyan¹, Liu Yubao², Yang Pengfei², Li Yuan², Lü Weidong² , Gao Rizeng², Zhang Yang², Hou Fusheng²

1. Department of Mechanical and Electrical Engineering, Baotou Railway Vocational and Technical College, Baotou Inner Mongolia 014000, China;
2. State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou Inner Mongolia 014030, China

Received:2022-01-30 Revised:2022-05-10 Online:2022-07-25 Published:2022-08-12

摘要/Abstract

摘要： 采用X射线衍射仪(XRD)、维氏硬度计、光学显微镜和电子背散射衍射(EBSD)研究了FeCoCrNiMn高熵合金经压下率为95%的大形变冷轧和550~800 ℃退火1 h后的晶体结构(fcc)、硬度变化、组织演变和再结晶行为。结果表明,冷轧-退火过程中FeCoCrNiMn高熵合金的晶体结构始终保持面心立方结构,再结晶开始温度为600 ℃,结束温度为750 ℃,随着退火温度的升高,试样的硬度先下降后逐渐趋于平缓,组织由纤维状的形变晶粒逐渐全部变为随机取向的再结晶晶粒。

关键词: FeCoCrNiMn高熵合金, 大形变冷轧, 退火, 晶体结构, 组织演变

Abstract: Crystal structure, hardness, microstructure evolution and recrystallization behavior of the FeCoCrNiMn high-entropy alloy after severe cold rolling with reduction ratio of 95% and then annealing at 550-800 ℃ for 1 h were studied by means of X-ray diffractometer (XRD), Vickers hardness tester, optical microscope and electron backscatter diffraction (EBSD). The results show that the crystal structure of the FeCoCrNiMn high-entropy alloy always maintains an fcc structure during the cold rolling-annealing process. The beginning temperature of recrystallization is 600 ℃, and the finishing temperature is 750 ℃. As the annealing temperature increases, the hardness of the high-entropy alloy decreases first and then tends to be gentle, and microstructure gradually changes from fibrous deformed grains to randomly oriented recrystallized grains.

Key words: FeCoCrNiMn high-entropy alloy, severe cold rolling, annealing, crystal structure, microstructure evolution

中图分类号:

TG142.1

国春艳, 刘玉宝, 杨鹏飞, 李园, 吕卫东, 高日增, 张洋, 侯复生. FeCoCrNiMn高熵合金大形变冷轧板再结晶退火过程中的组织演变[J]. 金属热处理, 2022, 47(7): 163-167.

Guo Chunyan, Liu Yubao, Yang Pengfei, Li Yuan, Lü Weidong , Gao Rizeng, Zhang Yang, Hou Fusheng. Recrystallizing annealed microstructure evolution of severe cold rolled FeCoCrNiMn high entropy alloy[J]. Heat Treatment of Metals, 2022, 47(7): 163-167.

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FeCoCrNiMn高熵合金大形变冷轧板再结晶退火过程中的组织演变

Recrystallizing annealed microstructure evolution of severe cold rolled FeCoCrNiMn high entropy alloy

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