Studies on the weldability of 17-4PH stainless steel, in the 621uC overaged condition, showed that Cr eq /Ni eq ratio higher than 1 . 5 resulted in primary ferritic mode of solidification in the weld metal. Post-weld aging treatment at 482uC enhanced the strength of the weld joint with corresponding reduction in impact toughness of the weld metal while post-weld aging at 621uC caused marginal reduction in strength of the weld joint with significant increase in impact toughness of the weld metal.
Post-weld heat treatment (PWHT) procedures and heat input during welding of 17–4PH stainless steel, using matching chemistry consumables, have been optimised in relation to its microstructural condition before welding based on room temperature tensile properties. The 17–4PH stainless steel was welded in two different prior microstructural conditions, namely, condition A (solution treated) and condition H1150 (overaged), using three different heat inputs of 0·27, 0·48, and 0·72 kJ mm-1, and post-weld heat treated to condition H900 (aged) or condition H1150 (over aged), using different heat treatment procedures. Room temperature tensile tests were carried out to study the combined effects of prior microstructural condition, heat input during welding, and PWHT procedures.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.