Investigation of local brittle zone in multipass welded joint of NiCrMoV steel with heavy section

@inproceedings{Li2018InvestigationOL,
  title={Investigation of local brittle zone in multipass welded joint of NiCrMoV steel with heavy section},
  author={Yifei Li and Zhipeng Cai and Kejian Li and Jiluan Pan and Xia Liu and Lingen Sun and Peng Wang},
  year={2018}
}
Welding was successfully used in the fabrication of low pressure steam turbine rotors for nuclear power plants. In this paper, the local brittle zone of the welded joint in NiCrMoV steel with heavy section was investigated by cross-zone fracture toughness test and the effect of martensite–austenite constituent in the simulated reheated zone of welds with different second peak temperature on toughness was analyzed. The results showed that the crack propagated in unstable manner in the reheated… CONTINUE READING