METHOD FOR DETERMINING THE RELATIVE HAZ TOUGHNESS OF STEEL

摘要

A method for determining the relative HAZ toughness of steel. The method comprises determining at least two thermal cycles of the steel for at least one weld heat input value and then simulating the HAZ that would result if the steel were actually welded in accordance with those thermal cycles. The steel is then fractured to determine various fracture properties, each of which may be used to determine the midpoint transition temperature associated with the fracture property used. The midpoint transition temperature is compared to a previously determined standard maximum midpoint transition temperature and if it is greater than the standard, the steel may have low HAZ toughness, but if it is less than the standard, the steel may have a high HAZ toughness.