Welding Behaviour of Low Nickel Chrome-Manganese Stainless Steel

Himanshu Vashishtha; Ravindra Vasantrao Taiwade; Rajesh Kisni Khatirkar; Avinash Vijay Ingle; Ravin Kumar Dayal

doi:10.2355/isijinternational.54.1361

Regular Article

Welding Behaviour of Low Nickel Chrome-Manganese Stainless Steel

Himanshu Vashishtha, Ravindra Vasantrao Taiwade , Rajesh Kisni Khatirkar, Avinash Vijay Ingle, Ravin Kumar Dayal

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Keywords: Cr–Mn stainless steel, microstructural evolution, tensile strength, hardness, shielded metal arc welding, fractography, Schaeffler diagram

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2014 Volume 54 Issue 6 Pages 1361-1367

DOI https://doi.org/10.2355/isijinternational.54.1361

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Abstract

Chrome-Manganese steel is relatively new steel as compared to its counterpart 304 series stainless steels. There are relatively few studies on the welding behaviour of low nickel Cr–Mn stainless steel (in particular, on the effect of heat input on the microstructural developments). In the present investigation, a low nickel chrome-manganese stainless steel was welded (shielded metal arc welding process) to see the effect of heat input on the microstructural evolution and mechanical properties. At higher heat inputs (404.2 J/mm and 528.1 J/mm), tensile strength and hardness are lower compared to low heat input (316.6 J/mm). Fractographic investigation of the tensile tested specimen revealed dimple-like ductile fracture. An attempt was also made to evaluate the phases incorporated in the investigated steel using Schaeffler diagram.

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