Effect of Current Density and Strain Rate on Deformation Resistance During Electrically-Assisted Compression of AlCr<sub>1.3</sub>TiNi<sub>2</sub> Eutectic High-Entropy Alloys

doi:10.12442/j.issn.1002-185X.20240561

Home > Archive>Volume 54, Issue 5, 2025 >1121-1126. DOI:10.12442/j.issn.1002-185X.20240561

Effect of Current Density and Strain Rate on Deformation Resistance During Electrically-Assisted Compression of AlCr1.3TiNi2 Eutectic High-Entropy Alloys
DOI:
                        10.12442/j.issn.1002-185X.20240561
                    
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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
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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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Abstract:

The effect of deformation resistance of AlCr_1.3TiNi₂ 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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[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 AlCr_1.3TiNi₂ 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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Received:August 28,2024
Revised:October 14,2024
Adopted:October 15,2024
Online: May 23,2025
Published: May 22,2025

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