Resistance spot-welding of AISI-1008 steel joints with MWCNT coating interlayer

Interlayers in Resistance Spot-Welded Lap Joints: A Critical Review

“…28a, the maximum tensile strength of 2.2 kN was obtained with a welding current of 7 kA. A compact and stronger metallurgical bonding was achieved between Ti and Mg owing to increased heat input which [36] resulted in the escalation of tensile shear strength and increased up to 3.3 kN with a welding current of 9 kA. But at a higher welding current of 10 kA, severe plastic deformation occurred which led to the deterioration of mechanical properties.…”

“…Excessive electrode force leads to weld cracks at the periphery of the nugget [36] 13. Ti6Al4V and MB3 (Mg alloy)…”

“…Incorporation of an MWCNTs coating as an interlayer between resistance spot-welded similar AISI-1008 steel joints and the resulting microstructure and the comparison of the mechanical properties between the bare and coated specimens were performed by Das et al [36]. An enhancement of ~ 45% was reported in the weld strength of the sample welded at 5000A + 0.7s.…”

“…Resistance spot welding is itself a new welding technique developed a few years ago. Widely applicable in the fields of sheet metal industries, automobile, aircraft industries due to its versatility and compactness, incorporation of [36] different techniques to enhance the properties of the materials welded adds to its advantages. High strength can be incorporated into different materials welded using these techniques.…”

“…Fig 24. Load vs displacement plots of the (a) uncoated, and (b) CNT-coated welded samples at the best welding parameters[36] …”