Weldability of Additive Manufactured Stainless Steel

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• 作者：Ville-Pekka Matilainen^a ; ^{ville-pekka.matilainen@lut.fi" class="auth_mail" title="E-mail the corresponding author} ; Joonas Pekkarinen^a ; ^b ; Antti Salminen^a ; ^b
• 关键词：Additive manufacturing ; laser welding ; weldability ; stainless steel
• 刊名：Physics Procedia
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：83
• 期：Complete
• 页码：808-817
• 全文大小：953 K

文摘

Part size in additive manufacturing is limited by the size of building area of AM equipment. Occasionally, larger constructions that AM machines are able to produce, are needed, and this creates demand for welding AM parts together. However there is very little information on welding of additive manufactured stainless steels. The aim of this study was to investigate the weldability aspects of AM material. In this study, comparison of the bead on plate welds between AM parts and sheet metal parts is done.

Used material was 316L stainless steel, AM and sheet metal, and parts were welded with laser welding. Weld quality was evaluated visually from macroscopic images. Results show that there are certain differences in the welds in AM parts compared to the welds in sheet metal parts. Differences were found in penetration depths and in type of welding defects. Nevertheless, this study presents that laser welding is suitable process for welding AM parts.