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Effect of Electric Pulse Treatment on the Microstructure and Machining Performance of Ti-6Al-4V

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Abstract

Electric pulse treatment can regulate the microstructure and mechanical properties of metals under low temperature in a very short time and this affects their machinability. In the work presented in this paper, Ti-6Al-4V was treated by an electric pulse, the influences of the electric pulse treatment on the microstructure and the mechanical properties of the Ti-6Al-4V alloy were explored, and the machinability of the Ti-6Al-4V alloy with electric pulse treatment was studied. The metastable β phase of the sample having electric pulse treatment at 2.98 A/mm2 became less, resulting in a decrease in the hardness, the basket-like microstructure of the sample by electric pulse treatment at 3.98 A/mm2 enhanced the plasticity. The cutting force, cutting temperature and workpiece surface roughness values of the Ti-6Al-4V having electric pulse treatment were significantly reduced, but the electric pulse treatment enhanced the workpiece surface layer plastic deformation, deepening the depth of the processing metamorphic layer.

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Funding

This work received funding from the National Natural Science Foundation of China (No. 52075159, 52075168) and funding from the Natural Science Foundation of Hunan Province (No. 2022JJ30019).

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Authors and Affiliations

  1. Hunan Provincial Key Laboratory of High Efficient and Precision Machining of Difficult-to-Cut Materials School of Mechanical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, Hunan, China

    Sun Fujian, Wan Shang, Xiao Gang & Niu Qiulin

  2. Hunan Jiangbin Machinery (Group) Co. Ltd, Xiangtan, 411100, Hunan, China

    Wang Dongfeng

  3. Luoyang Bearing Research Institute Co., Ltd, Luoyang, 471039, China

    Liao Junhui

  4. School of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China

    Xiao Gang

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  1. Sun Fujian
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  2. Wan Shang
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  3. Liao Junhui
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  4. Wang Dongfeng
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  5. Xiao Gang
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  6. Niu Qiulin
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Correspondence to Sun Fujian.

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Fujian, S., Shang, W., Junhui, L. et al. Effect of Electric Pulse Treatment on the Microstructure and Machining Performance of Ti-6Al-4V. J. of Materi Eng and Perform 33, 1169–1178 (2024). https://doi.org/10.1007/s11665-023-08055-5

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  • DOI: https://doi.org/10.1007/s11665-023-08055-5

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