轧制变形对高熵合金微观组织和力学性能的影响

doi:10.13251/j.issn.0254-6051.2022.03.013

金属热处理 ›› 2022, Vol. 47 ›› Issue (3): 67-71.DOI: 10.13251/j.issn.0254-6051.2022.03.013

轧制变形对高熵合金微观组织和力学性能的影响

梅金娜¹, 姜凤阳², 卫娜³, 刘浪浪², 思芳², 刘松涛², 王俊勃², 刘江南²

1.苏州热工研究院有限公司, 江苏苏州 215004;
2.西安工程大学材料工程学院, 陕西西安 710048;
3.西安西工大超晶科技发展有限责任公司, 陕西西安 710016

收稿日期:2021-10-27 修回日期:2021-12-27 出版日期:2022-03-25 发布日期:2022-04-22
作者简介:梅金娜(1981—),女,高级工程师,博士,主要研究方向为耐蚀合金开发与研究,E-mail: meijinna@cgnpc.com.cn
基金资助:
西安市重大科技成果转化及产业化项目(20GXSF0010)

Effect of rolling deformation on microstructure and mechanical properties of high-entropy alloy

Mei Jinna¹, Jiang Fengyang², Wei Na³, Liu Langlang², Si Fang², Liu Songtao², Wang Junbo², Liu Jiangnan²

1. Suzhou Nuclear Power Research Institute Co., Ltd., Suzhou Jiangsu 215004, China;
2. School of Materials Science and Engineering, Xi'an Polytechnic University, Xi'an Shaanxi 710048, China;
3. Xi'an Xigongda Super-Crystal Technology Development Co., Ltd., Xi'an Shaanxi 710016, China

Received:2021-10-27 Revised:2021-12-27 Online:2022-03-25 Published:2022-04-22

摘要/Abstract

摘要： 对(FeNi)₆₇Cr₁₅Mn₁₀Al₅Ti₃高熵合金进行退火、冷轧和热轧+冷轧等工艺处理,采用X射线衍射仪、扫描电镜和万能试验机分别对合金进行物相组成、组织形貌以及力学性能测试和表征。结果表明,铸态和退火态的非等主元(FeNi)₆₇Cr₁₅Mn₁₀Al₅Ti₃高熵合金更易形成单相固溶体;在中等变形的热轧+冷轧工艺下,合金形成FCC+BCC的双相固溶体,其屈服强度可提高到460.0 MPa;在中等变形的冷轧工艺下,合金会形成细小的金属间化合物,从而具有细小金属间化合物强化机制,使屈服强度显著提升并达到722.0 MPa,同时,合金仍具有约25.7%的均匀伸长率,综合力学性能最佳。

关键词: 高熵合金, 轧制变形, 微观组织, 力学性能

Abstract: Annealing, cold rolling and hot rolling+cold rolling were carried out on (FeNi)₆₇Cr₁₅Mn₁₀Al₅Ti₃ high-entropy alloy. The phase composition, morphology and mechanical of the alloy were analyzed by means of X-ray diffractometer, SEM and universal testing machine. The results show that the as-cast and annealed (FeNi)₆₇Cr₁₅Mn₁₀Al₅Ti₃ high-entropy alloy is easier to form single-phase solid solution. The two-phase solid solution alloy with FCC+BCC structure is formed under the hot rolling+cold rolling with medium deformation, and its yield strength can be increased to 460.0 MPa. The fine intermetallic compound is formed under cold rolling with medium deformation, resulting in fine intermetallic compound strengthening. The yield strength of the cold rolled alloy is significantly increased to 722.0 MPa with elongation of 25.7%, which is of the best comprehensive mechanical properties.

Key words: high-entropy alloy, rolling deformation, microstructure, mechanical properties

中图分类号:

TG156.21

梅金娜, 姜凤阳, 卫娜, 刘浪浪, 思芳, 刘松涛, 王俊勃, 刘江南. 轧制变形对高熵合金微观组织和力学性能的影响[J]. 金属热处理, 2022, 47(3): 67-71.

Mei Jinna, Jiang Fengyang, Wei Na, Liu Langlang, Si Fang, Liu Songtao, Wang Junbo, Liu Jiangnan. Effect of rolling deformation on microstructure and mechanical properties of high-entropy alloy[J]. Heat Treatment of Metals, 2022, 47(3): 67-71.

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轧制变形对高熵合金微观组织和力学性能的影响

Effect of rolling deformation on microstructure and mechanical properties of high-entropy alloy

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