Study on constitutive models of hot deformation for 34CrNi3MoV steel
B. Zheng,
D. Xu,
Y. Q. Wang,
L. X. Guo,
H. Y. Zhao,
D. Y. Ju
Affiliations
B. Zheng
School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, China; Technology Innovation Center for High Quality Cold Heading Steel of Hebei Province, Hebei University of Engineering, Handan, China
D. Xu
School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, China; Technology Innovation Center for High Quality Cold Heading Steel of Hebei Province, Hebei University of Engineering, Handan, China
Y. Q. Wang
Technology center, Zhongyuan Special Steel Equipment Manufacturing Corp. Ltd, Jiyuan, China
L. X. Guo
Technology Innovation Center for Wear Resistant Steel Plate of High plasticity and High Toughness of Hebei Province, Hebei Puyang Iron and Steel Corp. Ltd, Handan, China
H. Y. Zhao
School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, China
D. Y. Ju
School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, China
Isothermal constant strain rate compression experiments were conducted on 34CrNi3MoV steel using a thermal simulation experimental machine to study its thermal deformation behavior, with deformation temperatures ranging from 800 - 1 200 °C and strain rates ranging from 0,01 - 10 s-1 , and the corresponding stress-strain curves were obtained for 60 % compression. According to the results, through regression analysis of the 1stOpt software, parameter values of three constitutive models were obtained, and then the precision of prediction was compared by different models of flow stress.
