激光冲击强化对激光增材TC4钛合金组织和抗氧化性的影响

薛军; 冯建涛; 马长征; 宋斌文; 郭伟; 彭鹏; 孙汝剑; 朱颖

doi:10.3788/CO.20181102.0198

Volume 11 Issue 2

Apr. 2018

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Article Contents

Chinese Optics > 2018 > 11(2): 198-205.

XUE Jun, FENG Jian-tao, MA Chang-zheng, SONG Bin-wen, GUO Wei, PENG Peng, SUN Ru-jian, ZHU Ying. Influence of laser shock peening on microstructure and oxidation resistance of laser additive manufactured TC4 titanium alloy[J]. Chinese Optics, 2018, 11(2): 198-205. doi: 10.3788/CO.20181102.0198

Citation:

XUE Jun, FENG Jian-tao, MA Chang-zheng, SONG Bin-wen, GUO Wei, PENG Peng, SUN Ru-jian, ZHU Ying. Influence of laser shock peening on microstructure and oxidation resistance of laser additive manufactured TC4 titanium alloy[J]. Chinese Optics, 2018, 11(2): 198-205. doi: 10.3788/CO.20181102.0198

Citation:

XUE Jun, FENG Jian-tao, MA Chang-zheng, SONG Bin-wen, GUO Wei, PENG Peng, SUN Ru-jian, ZHU Ying. Influence of laser shock peening on microstructure and oxidation resistance of laser additive manufactured TC4 titanium alloy[J]. Chinese Optics, 2018, 11(2): 198-205. doi: 10.3788/CO.20181102.0198

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Influence of laser shock peening on microstructure and oxidation resistance of laser additive manufactured TC4 titanium alloy

doi: 10.3788/CO.20181102.0198

1.
Army Armord Military Academy, Sergeant School, Changchun 130117, China
2.
School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China

Funds:

National International Collaborative Science and Technology Research Project 2013DFR50590

Civil Air Craft Special Research Project MJ-2016-F-16

More Information

Corresponding author: XUE Jun，E-mail：xjykl@163.com
Received Date: 11 Nov 2017
Rev Recd Date: 13 Dec 2017
Publish Date: 01 Apr 2018

Abstract

Abstract

In recent years, laser additive manufacturing(also called 3D printing) has become the focus of scientific research and industrial applications. In order to study the impact of laser shock peening(LSP) on the properties of laser additive manufactured Ti-6Al-4V alloy, a TC4 titanium alloy prepared by 3D printing was carried out LSP by using Nd:YAG laser with energy of 5 J, wavelength of 1 064 nm, pulse width of 10 ns and spot diameter of 3 mm, and the micro-hardness, microstructure, residual stress and high temperature oxidation performance of the material before and after LSP were analyzed. The results show that by comparing with the TC4 titanium alloy before LSP, the micro-hardness of that after LSP increases by 8%, and the depth of the impact layer reaches 0.4 mm, the grains in the strengthened region are refined, the dislocation is increased and the deformation twins are produced. The residual compressive stress of laser shock peening is as high as 472 MPa, and the high temperature oxidation resistance of the material is also improved.
- laser shock peening,
- laser additive manufacturing,
- titanium alloy,
- oxidation resistance

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References(21)

References

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