Cooling Rate in Welding—A Aid to Weldability Evaluation

Weldability evaluation always involves the consideration of microstructural changes and in most of the alloy steels these are greatly dependent on the cooling rates to which the steel is subjected. The determination of cooling rates in weld-metal and HAZ has attracted the attention of many investigators. Rosenthal and, Adams have done pioneering work in this direction. However, their findings are limited to a few simple weld confirmations and the data presented are not in the form suitable for direct use. An attempt has been made in this paper to explain how certain conclusions of great practical utility can be derived from this.