Effect of Heat Treatment Process on the Microstructure and Properties of Cr5 Hot Work Die Steel
This study investigates the diffusion annealing process and spheroidization annealing process of Cr5 hot work die steel,and explores the influence of insulation time of each process on its carbides.Develop a heat treatment plan based on the TTT chart to improve the band segregation of the microstructure.During the process of spheroidization annealing,with the extension of isothermal time,the carbides gradually grow with insoluble carbides as the core,making the microstructure distribution more uniform.Elaborate on the relevant organizational morphology and transformation mechanism,which have been verified to be consistent with the results of microstructure analysis.
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