Abstract
The main metallurgical aspects that must be taken into account in the production of disk blanks with a diameter of up to 300 mm by hot forging are presented using the example of a nickel high-temperature alloy of the VZh179 type. The temperatures of phase transformations in the material under study are determined using the method of differential thermal analysis. On the basis of these data, the temperature-time modes of heat treatment of disk forgings are selected. The computer simulation of the hot forging process is carried out in the QForm 3D software package. The distribution fi elds of temperature and intensity of plastic deformation over the forging volume are determined. The optimal modes of hot forging and heat treatment of a nickel heat-resistant alloy are selected, which ensure high manufacturability and a level of mechanical characteristics that meets the requirements of technical specifications.
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