Microstructure and mechanical properties of welded additively manufactured stainless steels SS316L

Pasang, T. and Kirchner, A. and Jehring, U. and Aziziderouei, M. and Tao, Y. and Jiang, C. -P. and Wang, J. C. and Aisyah, Iis Siti (2019) Microstructure and mechanical properties of welded additively manufactured stainless steels SS316L. Metals and Materials International, 25. pp. 1278-1286. ISSN 1598-9623

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Abstract

Microstructure and mechanical properties of additively manufactured SS316L has been investigated. The samples produced by selective electron beam melting machine were then subjected to gas tungsten arc welding. Various examinations were performed including metallography and microscopy, hardness testing, and tensile testing coupled with digital image correlation software. Strain distribution was clearly evident on the samples during tensile testing with necking taking place at the heat affected zone on both sides of the weldments. From tensile testing, it was clear that the ductility and strengths of the samples were equal to those of conventionally produced samples such as rolled sheet. Hardness testing indicated the uniform distribution across the base metal and the weldments. Scanning electron microscopy identified the presence of Cr and Mo-rich precipitates on the grain boundaries, while the fracture surface was entirely covered with dimples (microvoid coalescence) indicating a ductile fracture mode.

Item Type: Article
Keywords: SS316L, Additive manufacturing, Electron beam melting, Gas tungsten arc welding, Digital image correlation, Strain distribution
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering > Department of Mechanical Engineering (21201)
Depositing User: maulana Maulana Chairudin
Date Deposited: 24 Jan 2024 01:36
Last Modified: 24 Jan 2024 01:36
URI: https://eprints.umm.ac.id/id/eprint/2928

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