Fabrication of bimetallic additively manufactured structure (BAMS) of low carbon steel and 316L austenitic stainless steel with wire + arc additive manufacturing

Published on Dec 4, 2019in Rapid Prototyping Journal3.099
· DOI :10.1108/RPJ-09-2018-0235
Md. R. U. Ahsan5
Estimated H-index: 5
A. N. M. Tanvir4
Estimated H-index: 4
+ 3 AuthorsDuck Bong Kim11
Estimated H-index: 11
Wire + arc additive manufacturing (WAAM) uses existing welding technology to make a part from metal deposited in an almost net shape. WAAM is flexible in that it can use multiple materials successively or simultaneously during the manufacturing of a single component.,In this work, a gas metal arc welding (GMAW) based wire + arc additive manufacturing (WAAM) system has been developed to use two material successively and fabricate bimetallic additively manufactured structure (BAMS) of low carbon steel and AISI 316L stainless steel (SS).,The interface shows two distinctive zones of LCS and SS deposits without any weld defects. The hardness profile shows a sudden increase of hardness at the interface, which is attributed to the migration of chromium from the SS. The tensile test results show that the bimetallic specimens failed at the LCS side, as LCS has lower strength of the materials used.,The microstructural features and mechanical properties are studied in-depth with special emphasis on the bimetallic interface.
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