The effects of laser heat treatment on the microstructure and properties of alloy 800H\nwere investigated. The fracture morphology, elemental changes, and phase composition of the\nspecimens were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy\n(EDS), and X-ray diffractometry (XRD). The results show that the long-lasting life of the specimen\nafter laser heat treatment increased by 28.6%, and the elongation after fracture increased by 20.7%.\nThe macroscopic morphology of the fracture specimen exhibited obvious ductile fracture morphology,\nand the changes in the elemental content and grain size significantly affected the ductility and\ntoughness of the alloy. This study has certain guiding significance for the optimization of the heat\ntreatment process of this type of alloy.
Loading....