A GRAIN GROWTH KINETIC MODEL IN WELD HAZ AND GRAIN GROWTH DIAGRAM FOR SIMULATED HAZ

In this paper,a grain growth kinetic model in the weld heat-affected zone(HAZ) is proposed.Based on this model and part data from simulated welds,the diagrams for grain growth in HAZ are presented for Mo bearing steel and Mo+V bearing steel.Other data from simulated welds were in good agree with the value the diagrams predicted.The grain growth kinetic behavior of the steels is discussed.