A reasonable numerical model was established taking consider the thermal stress and the micro-forging stress of cladding layer.The computer simulation was carried out using the finite element method.The results show that： before micro-forging,thermal stress of cladding layer is mainly for tensile stress,which is the main cause of crack formation.After micro-forging,the stress of cladding layer changes the tensile stress into compressive stress,this is a very good way to improve and eliminate the cladding layer＇s cracks.The simulation can obta...
