Laser & Optoelectronics Progress, Volume. 53, Issue 11, 111404(2016)
Microstructure and Mechanical Property of S-04 Steel by Selective Laser Melting
Selective laser melting (SLM) technology is used to fabricate S-04 specimens, and their microstructures and mechanical properties before and after heat-treatment are researched. The results show that the density of S-04 molded sample can be up to 99.791% and the specimens before and after heat-treatment are both composed of α′ martensite and a little residual γ austenite. The untreated specimen possess a multi-layer stacked character peculiar to the SLM technique, whereas after heat-treatment, this character disappears and the main specimen phase is bunchy martensite. The mechanical property at room temperature of heat-treated specimens is better than that of non-heat-treated ones.
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Jing Guanyi, Wei Kaiwen, Wang Zemin, Yin Jie, Zeng Xiaoyan. Microstructure and Mechanical Property of S-04 Steel by Selective Laser Melting[J]. Laser & Optoelectronics Progress, 2016, 53(11): 111404
Category: Lasers and Laser Optics
Received: Jul. 5, 2016
Accepted: --
Published Online: Nov. 14, 2016
The Author Email: Guanyi Jing (gyjing@hust.edu.cn)