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

International Conference on Mechanical Engineering and Applied Composite Materials

机械制造;材料科学

Ramdan, R.D.^1 ; Koswara, A.L.^2 ; Surasno^3 ; Wirawan, R.^4 ; Faturohman, F.^1 ; Widyanto, B.^1 ; Suratman, R.^1

Faculty of Mechanical and Aerospace Engineering, InstitutTeknologi Bandung, Jl. Ganesa no 10, Bandung

40132, Indonesia^1

CMechanical Engineering Department, UniversitasSanggaBuana, Jl. PHH.Mustofa no 68, West Javaa, Bandung

40124, Indonesia^2

Center for Material and Technical Products, Jl. Sangkuriang 14, Bandung, West Java

40135, Indonesia^3

Faculty of Engineering, UniversitasNegeri Jakarta, Jl. RawamangunMuka, Jakarta Timur

13220, Indonesia^4

关键词: Chromium carbide;    Dissimilar metal welding;    Energy dispersive spectroscopies (EDS);    Gas metal arc welding (GMAW);    Mechanical aspects;    Research focus;    Welded metals;    Welding speed;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/307/1/012056/pdf
DOI  :  10.1088/1757-899X/307/1/012056

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

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.