The Study Of Dynamic Recrystallization And Static Recrystallization Behavior For50CrV4

The spring steel Need to have good hardenability and elasticity decreased resistance, highyield strength and fatigue limit for its special working atmosphere.50CrV4is one kind of alloyspring steel.It is Widely used in the production of large size spring and the core parts ofautomobile clutch for Good hardenability and other comprehensive performance.As Guangzhouzhujiang steel co., LTD need to make Product technology improvement for50CrV4spring steelproduction.this passage make the the experimental study of hot deformation behavior In rollingprocess, dynamic recrystallization and static recrystallization for its50CrV4billet of hot rollingproduction line by thermal simulation technology.The main researching contents and conclusions:(1) Getting the true stress-true strain curve in the process of hot deformation underdifferent deformation conditions by single channel compression deformation experiment,and Theflow stress model was established.(2) Getting the true stress-true strain curve in the process of hot deformation underdifferent deformation conditions by Pairs of secondary compression deformation experiment,andthe dynamics equation of static recrystallization was established as the same.(3) Analyzed the influence of different deformation process to this material structure byusing Metallographic microscope and scanning electron microscopy (sem) observing themicrostructure of the specimen after experiments.This research will provide the theoretical foundation to set TMCP parameters, optimizerolling process, realize product performance improvement of50CrV4spring steel as soon aspossible.