Materials Reports 2022, Vol. 36 Issue (Z1): 22010033-9 |
METALS AND METAL MATRIX COMPOSITES |
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Research Progress on Post-Processing of Metal Parts by Selective Laser Melting |
YU Jiang1, DING Hongyu2, GENG Yaoxiang1, XU Junhua1, ZAI Chunfeng1
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1 School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China 2 Marine Equipment and Technology Institute, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China |
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Abstract Additive manufacturing is a kind of advanced fabricating technology which developed very fast in recent years, it possesses advantages such as short processing procedures, high material utilization rate, no need for mold, cost-saving, and so on. Selective laser melting (SLM) is an important branch of the additive manufacturing process, it is based on the powder bed fusion technique which applies laser as heat source. SLM is capable to form medium and small size complex metal structures with high precision. In addition to structural design and powder bed fusion period, an appropriate post-treatment process is also very important for the final product, which requires fine microstructure, exact size, good surface finish, high mechanical property, and so on. This paper summarizes the research progress of state of the art on the post-treatment of SLM parts, including powder recycling and conditioning, heat treating (annealing, solution aging, carburizing/nitriding treatment), hot isostatic pres-sing, conventional machining (electrical discharge machining, support removal, milling/grinding), surface treatment (sand blasting, laser shot peening, abrasive flow) as well as other aspects. It may be helpful in improving product quality.
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Published: 05 June 2022
Online: 2022-06-08
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Fund:Natural Science Foundation of Jiangsu Province (BK20190979). |
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