Effect of pulsed magnetic field on surface hardness and microstructure of TC4 titanium alloy

doi:10.13251/j.issn.0254-6051.2023.06.007

Abstract

Abstract: In order to improve the surface hardness of TC4 titanium alloy, the pulsed magnetic field and copper sheet driving were adopted to test the TC4 titanium alloy sheet with different voltages and impact times, then the test results were analyzed by using Vickers hardness tester, optical microscope and finite element simulation. The results show that the pulsed magnetic field impact can significantly improve the surface hardness of the TC4 titanium alloy sheet, the maximum hardness value after the treatment is 376.9 HV0.1, and rises 10.9%. In addition, the β phase becomes finer and uniformly distributed. Furthermore, within a certain range, higher energy and multiple impacts are the effective ways to improve the surface hardness of the TC4 titanium alloy sheet.

Key words: pulsed magnetic field processing, TC4 titanium alloy, alloy surface strengthening, surface hardness, microstructure

CLC Number:

TG146.2

Chen Menghao, Wang Zhefeng, Han Jin, He Ruijun, Zhang Wangfeng, Guo Jiaqi, Kong Lingli, Ni Zhiming. Effect of pulsed magnetic field on surface hardness and microstructure of TC4 titanium alloy[J]. Heat Treatment of Metals, 2023, 48(6): 41-46.

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