Journal of Zhejiang University-SCIENCE A

, Volume 7, Issue 8, pp 1453–1460 | Cite as

Investigation on Zener-Hollomon parameter in the warm-hot deformation behavior of 20CrMnTi

  • Yang Hui 
  • Li Zhen-hong 
  • Zhang Zhi-liang 
Article

Abstract

The warm-hot deformation behavior of 20CrMnTi steel was studied with hot compression tests at temperature range of 1123∼1273 K and strain rate of 0.1∼20 s−1. The activation energy for warm-hot deformation is 426.064 KJ/mol. The influences of Zener-Hollomon parameter, strain and grain size imposing on the flow stress were analyzed in the temperature range of warm-hot forging. Creep theory and methematical theory of statistics were used to obtain mathematical models of flow stress. The research and results provide scientific basis for controlling microstructure of forging process through Zener-Hollomon parameter.

Key words

Zener-Hollomon parameter Warm-hot deformation 20CrMnTi Grain size 

CLC number

TG312 

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Copyright information

© Zhejiang University 2006

Authors and Affiliations

  • Yang Hui 
    • 1
  • Li Zhen-hong 
    • 1
  • Zhang Zhi-liang 
    • 1
  1. 1.Department of Plasticity TechnologyShanghai Jiao Tong UniversityShanghaiChina

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