| METALS AND METAL MATRIX COMPOSITES |
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| Effect of Electropulsing Treatment on the Microstructure and Mechanical Properties of TC4 Titanium Alloy |
| WANG Shuai1, QING Hua2,*, LU Zhao1,*, YAO Qingrong1, CHEN Zewei1, WANG Yuhan1, ZHANG Ya3, TIAN Weiqing1, TAN Dunming2, ZHAO Yeman2
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1 Guangxi Key Laboratory of Information Materials, School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, Guangxi, China
2 Aviation Maintenance NCO Academy, Air Force Engineering University, Xinyang 464001, Henan, China
3 School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450000, China |
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Abstract In this work, the microstructure and mechanical properties of TC4 titanium alloy, with a particular focus on the effects of electropulsing treatment(EPT) technology, were investigated. The microstructure of the specimens were characterized by optical and scanning electron microscopy before and after treatment at different voltages and cycle times. The mechanical properties of the specimens were tested and analyzed using a hydraulic servo material testing machine. The results demonstrate that there is a linear relationship between the highest temperature and the maximum current density during the electropulsing treatment. Furthermore, the electropulsing treatment markedly enhances the microstructure of TC4 titanium alloy and effectively improves its elongation, while simultaneously reducing the recrystallization and phase transformation temperatures. The elongation exhibits an initial increase followed by a decline with rising voltage. The tensile strength remains largely unaltered, whereas the yield strength declines with increasing voltage. Among the specimens, the elongation increased by 22.9% under the EPT of 400 V and 50 cycles. This study provides a new optimization strategy for the processing and application of titanium alloys.
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Published: 10 November 2025
Online: 2025-11-10
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2025, Vol. 39 
