Study of microstructural evolution during static recrystallization in a low alloy steel
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Hot compression tests of 42CrMo steel were carried out on Gleeble-1500 thermo-mechanical simulator. The effects of forming temperature, strain rate, deformation degree, and initial austenite grain size on the microstructural evolution during static recrystallization in hot deformed 42CrMo steel were discussed. Based on the experimental results, the grain size model for static recrystallization was established. It is found that the effects of the processing parameters on the microstructural evolution during static recrystallization are significant, while those of the initial austenitic grain size are not obvious. Additionally, a good agreement between the experimental and predicted grain sizes was also obtained.
KeywordsMicrostructural Evolution Size Model 42CrMo Steel Static Recrystallization Deformation Degree
This work was supported by 973 Program (Grant No.2006CB705401), National Natural Science Foundation of China (No. 50805147), China Postdoctoral Science Foundation (Grant No.20070410302), and the Postdoctoral Science Foundation of Central South University.