Study of Resistance Spot Welding Between AISI 301 Stainless Steel and AISI 1020 Carbon Steel Dissimilar Alloys

M. Ishak; L. H. Shah; I. S. R. Aisha; W. Hafizi; M. R. Islam

doi:10.15282/jmes.7.2014.7.0077

Authors

M. Ishak Faculty of Mechanical Engineering, University Malaysia Pahang 26600 Pekan, Malaysia
L. H. Shah Faculty of Mechanical Engineering, University Malaysia Pahang 26600 Pekan, Malaysia
I. S. R. Aisha Faculty of Mechanical Engineering, University Malaysia Pahang 26600 Pekan, Malaysia
W. Hafizi Faculty of Mechanical Engineering, University Malaysia Pahang 26600 Pekan, Malaysia
M. R. Islam Faculty of Mechanical Engineering, University Malaysia Pahang 26600 Pekan, Malaysia

DOI:

https://doi.org/10.15282/jmes.7.2014.7.0077

Keywords:

AISI 301 stainless steel; AISI 1020 carbon steel; RSW; tensile test; Charpy test.

Abstract

Joining dissimilar metals has recently become very popular in industries because of the advantages associated with the weld joint. This paper focuses on an investigation of mechanical and material properties, and the optimization of mechanical properties in resistance spot welding methods in lap configurations between AISI 301 stainless steel and AISI 1020 carbon steel. The Taguchi method was used to design experiments. Welding was conducted using a spot welder. Tensile and Charpy impact test specimens were prepared from the welded sheets in appropriate dimensions and tensile and Charpy impact tests were performed for each specimen. The depth and width of weld nuggets were investigated. It can be concluded from the investigation that the welding joint in this method can offer moderate strength and moderate Charpy impact energy. From the results of the Taguchi analysis, the combination of optimum parameters for dissimilar stainless steel-carbon steel resistance spot welding is: welding current, 5.0kA; welding squeeze time, 3.0 cycle; and welding pressure, 40 psi. In order to improve significant mechanical and metallurgical properties of the joint, other variable parameters like voltage, electrode tip diameter etc. can also be introduced and investigated so that the most influential parameters and their suitable ranges can be identified.

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