Room temperature tensile deformation behavior of a Ni-based superalloy with high W content

K416B Ni-based superalloy with high W content has good temperature properties and low cost, which a great development potential. To investigate the room tensile property deformation feature of superalloy, testing at was carried out, optical microscopy (OM), scanning electron (SEM) transmission (TEM) were used to analyze damage mechanisms. Results show that main features nickel-based are dislocations slipping in matrix shearing into ?? phase. The <110> super-dislocations phase can form anti-phase boundary two coupled (a/2)<110> partial-dislocations or decompose configuration (a/3)<112> partial plus stacking fault. In later stage testing, slip-lines different orientations activated grain, causing stress concentration regions block carbide porosity, cracks initiate propagate along these regions.