Metallurgy and mechanical properties variation with heat input,during dissimilar metal welding between stainless and carbon steel

The present research focus on the metallurgy and mechanical aspect of dissimilar metal welding.One of the common parameters that significantly contribute to the metallurgical aspect on the metal during welding is heat input. Regarding this point, in the present research, voltage, current and the wel...

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Published inIOP conference series. Materials Science and Engineering Vol. 307; no. 1; pp. 12056 - 12060
Main Authors Ramdan, RD, Koswara, AL, Surasno, Wirawan, R, Faturohman, F, Widyanto, B, Suratman, R
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.02.2018
Subjects
Carbon steel
Carbon steels
Chromium carbide
Diamond pyramid hardness tests
Dissimilar metals
Filler metals
Gas metal arc welding
Grain boundaries
Heat affected zone
Martensite
Mechanical properties
Metallurgy
Stainless steel
Stainless steels
Structural analysis
Tensile tests
Welding parameters
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Summary:The present research focus on the metallurgy and mechanical aspect of dissimilar metal welding.One of the common parameters that significantly contribute to the metallurgical aspect on the metal during welding is heat input. Regarding this point, in the present research, voltage, current and the welding speed has been varied in order to observe the effect of heat input on the metallurgical and mechanical aspect of both welded metals. Welding was conducted by Gas Metal Arc Welding (GMAW) on stainless and carbon steel with filler metal of ER 309. After welding, hardness test (micro-Vickers), tensile test, macro and micro-structure characterization and Energy Dispersive Spectroscopy (EDS) characterization were performed. It was observed no brittle martensite observed at HAZ of carbon steel, whereas sensitization was observed at the HAZ of stainless steel for all heat input variation at the present research. Generally, both HAZ at carbon steel and stainless steel did not affect tensile test result, however the formation of chromium carbide at the grain boundary of HAZ structure (sensitization) of stainless steel, indicate that better process and control of welding is required for dissimilar metal welding, especially to overcome this issue.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/307/1/012056