Research progress of austenitic stainless steel made by metal additive manufacturing |
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Authors: | LIU Shifeng SONG Xi WANG Yan XUE Tong SONG Zhigang SHANG Weiwei |
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Affiliation: | 1.School of Metallurgical and Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, Shaanxi, China;2.Central Iron and Steel Research Institute, Beijing 100081, China;3.Shannxi Steel Group Industrial Research Institute Co., Ltd., Hanzhong 723000, Shaanxi, China |
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Abstract: | Compared with the parts prepared by conventional methods, the parts formed by metal additive manufacturing (MAM) technology are prone to have non equilibrium and sub micro cellular structures, which show more excellent performance. Especially, the 316L stainless steel formed by laser powder bed melting technology has high yield strength, good elongation, and excellent corrosion resistance. Aiming at the superfast thermal cycle, complex metallurgical reactions, intense non equilibrium solidification, and particular thermal history of MAM technologies, the current advances in the related fields of laser powder bed fusion 316L (L PBF 316L) austenitic stainless steel were systematically reviewed. The mechanical properties and corrosion mechanism of L PBF 316L and its influencing factors including microstructural features evolution and corresponding regulation were discussed. All importantly, the strengthening and toughening mechanisms of 316L deformation were thoroughly revealed. Finally, a brief prospect on the future research direction of additive manufacturing austenitic stainless steel was provided. |
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Keywords: | Key words:additive manufacturing 316L stainless steel strengthening mechanism corrosion mechanism |
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