In order to better predict the residual stress state of dissimilar steel welded joint of steam generator in nuclear power plant and ensure the safety of the equipment operation

the residual stress of the dissimilar steel welding at coolant outlet of the nuclear steam generator safe end was predicted

by fully considering the thermal physical properties and mechanical properties of the low alloy steel pipe SA508 and stainless steel CF8 A

using finite element software.The blind-hole method was employed to detect the residual stress located on both sides of the inner and outer walls.The results show that

the measured values of the axial residual stress has a high degree of agreement with the simulated values

which verifies the accuracy of the simulation method.The residual stress distributions of the whole specimen can be analyzed by finite element simulation.The high tensile stress mainly concentrates on the isolation layer and HAZ

which are dangerous positions for stress corrosion cracking.