The Resistance Spot Weldability of a Stainless Steel/Aluminium/Low Carbon Steel 3-Ply Clad Sheet

Abstract

The present paper is aimed at investigating the resistance spot weldability of a 3-ply clad sheet comprised of stainless steel (SS), aluminium (Al) and low carbon steel (LCS). The weldability was assessed with the help of the weldable current range (WCR), the current range between the minimum current required to produce 4√t nugget diameter and a maximum current at which expulsion occurs. However, electrode-sheet sticking was found as the limiting factor instead of expulsion. It was observed that the introduction of aluminium to the SS/LCS clad increased the weld current range by shifting the expulsion to higher current, but resulted in melting of the electrode and subsequent electrode-sheet sticking.

Effect of Burn-off Length on the Properties of Friction Welded Dissimilar Steel Bars

“…The average grain size of DRX region on CS and SS side is almost same on both sides of the interface, is owing to the formation of refined grain structure in the DRX zone. The refined grain structure at the joint interface observed to be resulted in enhancing of mechanical properties [29][30][31][32] .…”

TIG Arc Welding - Brazing of Dissimilar Metals - An Overview

“…Figure 5 shows the fracture morphologies of pure Al joint and Al-Cu-Zr joint. All of these are better than solid state and laser welds of the dissimilar joints [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46].…”

Analysis of double resistance spot welding's failure in high strength low alloy steel

“…1. Schematic of RSW process [7] The main benefit of RSW is that it is easy to automate, not expensive to install welding machines and it can use for a wide range of materials such as high-strength steel, aluminum and low carbon steel [8][9][10][11]. Electrode force, welding time, welding current, and sheet thickness are all factors that affect RSW, but the welding current is by far the most crucial factor [12].…”