The effect of aluminium content (0?023, 0?038 and 0?070 wt-%) on microstructure and impact toughness of simulated coarse grained heat affected zone (CGHAZ) of high strength low alloy steels with different heat inputs (20, 100 and 200 kJ cm 21 ) was investigated. The microstructure of simulated CGHAZ consisted of predominantly granular bainite. The martensite-austenite constituents became finer and its volume fraction decreased with increasing aluminium content, irrespective of heat input level. The impact toughness of the simulated CGHAZ improved remarkably with increasing aluminium content even at high heat input of 200 kJ cm 21 . It was attributed to the reduction in volume fraction of martensite-austenite constituents and the refined martensite-austenite constituents by addition of appropriate aluminium.
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.