Abstract
This investigation presents results of experimental work to illustrate the effect of post weld heat treatment (PWHT) on the microstructure and mechanical properties of low carbon steel AISI 1020 butt-welded components. In order to assess the effect of PWHTs, different type of heat treatments have been applied using different soaking temperature, heating rates, time durations and cooling rates. To assess the effect of these different heat treatment schemes on the mechanical properties, micro-hardness, tensile strength and notched impact tests have been carried out on the welded joint. Also metallurgical testing has been carried out to assess the change in the metal microstructure before and after heat treatments.
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