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首页 > 过刊浏览>2025年第54卷第5期 >1121-1126. DOI:10.12442/j.issn.1002-185X.20240561
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电流密度和应变速率对AlCr1.3TiNi2共晶高熵合金电压缩抗变形性能的影响
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1.哈尔滨工业大学 微系统与微结构制造教育部重点实验室，黑龙江 哈尔滨 150001;2.哈尔滨工业大学 金属精密热加工国家级重点实验室，黑龙江 哈尔滨 150001;3.哈尔滨工业大学 材料科学与工程学院，黑龙江 哈尔滨 150001;4.西安稀有金属材料研究院有限公司，陕西 西安 710016

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国家自然科学基金项目(批准号:52305349)、黑龙江头雁团队资助号:HITTY-20190036、黑龙江省自然科学基金项目(LH2023E033)、中广核先进核能与新能源研究所项目(CGN-HIT202305)、陕西省自然科学基础研究计划项目(2023-JC-QN-0518)资助。


Effect of Current Density and Strain Rate on Deformation Resistance During Electrically-Assisted Compression of AlCr1.3TiNi2 Eutectic High-Entropy Alloys
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Affiliation:

1.Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin 150001, China;2.National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001, China;3.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;4.Xi'an Rare Metal Materials Institute Co., Ltd, Xi 'an 710016, China

Fund Project:

National Natural Science Foundation of China (52305349); Heilongjiang Touyan Team (HITTY-20190036); Heilongjiang Provincial Natural Science Foundation of China (LH2023E033); CGN-HIT Advanced Nuclear and New Energy Research Institute (CGN-HIT202305); Natural Science Basic Research Program of Shaanxi Province (2023-JC-QN-0518)

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    摘要:

    研究了不同电流密度和应变速率下AlCr1.3TiNi2共晶高熵合金在电辅助压缩过程中抗变形性能的影响。结果表明：当电流密度为60 A/mm2，应变速率为0.1 s-1时，抗拉伸强度显著降低，从约3000 MPa降至1900 MPa，降幅约36.7%。然而，随着电流密度的增加，由于中温脆性延伸率下降，这是由于电流引起的焦耳效应导致应力集中，缺陷形成增加。在恒定电流密度下，流变应力随应变速率的增大而减小。

    Abstract:

    The effect of deformation resistance of AlCr1.3TiNi2 eutectic high-entropy alloys under various current densities and strain rates was investigated during electrically-assisted compression. Results show that at current density of 60 A/mm2 and strain rate of 0.1 s-1, the ultimate tensile stress shows a significant decrease from approximately 3000 MPa to 1900 MPa with reduction ratio of about 36.7%. However, as current density increases, elongation decreases due to intermediate temperature embrittlement. This is because the current induces Joule effect, which then leads to stress concentration and more defect formation. Moreover, the flow stress is decreased with the increase in strain rate at constant current density.

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王方辉,李虎山,张浩,丁子恒,包建兴,丁朝刚,单德彬,郭斌,徐杰.电流密度和应变速率对AlCr1.3TiNi2共晶高熵合金电压缩抗变形性能的影响[J].稀有金属材料与工程,2025,54(5):1121~1126.[Wang Fanghui, Li Hushan, Zhang Hao, Ding Ziheng, Bao Jianxing, Ding Chaogang, Shan Debin, Guo Bin, Xu Jie. Effect of Current Density and Strain Rate on Deformation Resistance During Electrically-Assisted Compression of AlCr1.3TiNi2 Eutectic High-Entropy Alloys[J]. Rare Metal Materials and Engineering,2025,54(5):1121~1126.]
DOI：10.12442/j. issn.1002-185X.20240561

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  • 收稿日期:2024-08-28
  • 最后修改日期:2024-10-14
  • 录用日期:2024-10-15
  • 在线发布日期: 2025-05-23
  • 出版日期: 2025-05-22

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