The stress-relaxation test and slow tensile test of simulated weld coarse grain heat affected zone(CGHAZ) of steels 15CrMoV, 18MnMoNiNb and 12Ni3CrMoV are carried out at reheat temperature. Themetallographic character...The stress-relaxation test and slow tensile test of simulated weld coarse grain heat affected zone(CGHAZ) of steels 15CrMoV, 18MnMoNiNb and 12Ni3CrMoV are carried out at reheat temperature. Themetallographic characteristics and the fracture feature of reheat crack are investigated. The results show thatthe fracture characteristics of the initiation and propagation of reheat cracking have a certain regularity.展开更多
文摘The stress-relaxation test and slow tensile test of simulated weld coarse grain heat affected zone(CGHAZ) of steels 15CrMoV, 18MnMoNiNb and 12Ni3CrMoV are carried out at reheat temperature. Themetallographic characteristics and the fracture feature of reheat crack are investigated. The results show thatthe fracture characteristics of the initiation and propagation of reheat cracking have a certain regularity.
