Analysis on crack arrest by electromagnetic heating in T10 welded joints with embedding crack

The temperature field distribution of the welded joint with circular embedding crack was calculated by finite element analysis.By the ZL-2 discharge device,the welded joints of T10 steel with circular embedding crack were discharged by electromagnetic heating.The test result shows that the crack tip in the circular embedding crack is melted and the crack propagation is stopped,and the white layer organization is found near the crack tip.The test of mechanical properties for welded joints before and after the crack arrest shows that after the crack arrest,the maximum torque and the torsional strength of welded joints are increased by 17%.