Abstract
Metallurgical and mechanical characteristics of weld joints of aluminium, mild steel and stainless steel governed by the parameters of P-GMA welding have been discussed for control as a function of the summarised influence of pulse parameters defined by the factor ϕ. The metallurgical characteristics are systematically addressed in terms of weld chemistry, weld porosity and solidification behaviour of weld pool. The mechanism of the variation of microstructure in aluminium, mild steel and stainless steel welds as a function of pulse parameters is thoroughly discussed. The mechanical characteristics of weld joint are addressed by the control of various stresses generated in it with a change in pulse parameters during P-GMA welding.
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