The effect of post welding annealing on microstructure and mechanical properties of titanium welded tubes with wall thickness of 0.5 mm was studied by high frequency induction welding.After annea-ling at 800℃,the results show that the appearance color of the titanium welded pipe has no change;the microstructure of the welded joint changes from a dentate serration like α'phase to equiaxed microstruc-ture;the internal grain orientation is consistent,the grain grows significantly,and the distribution of hardness values in each area of the welded...
