Original scientific paper

Modified ZERILLI-ARMSTRONG model for 21-4N heat-resistant steel

X. M. Huang ; College of Mechanical Engineering, North China University of Science and Technology, Hebei, Tangshan, China
H. Y. Long ; College of Mechanical Engineering, North China University of Science and Technology, Hebei, Tangshan, China
Y. M. Li ; College of Mechanical Engineering, North China University of Science and Technology, Hebei, Tangshan, China
H. L. Duan ; College of Mechanical Engineering, North China University of Science and Technology, Hebei, Tangshan, China

Abstract

The Gleeble - 1500D thermal simulator was used to conduct the isothermal compression test of 21 - 4N heat-resistant steel under the T range of 1 273 - 1 453 K and ε̇ of 0,01 – 10 s-1. Using the obtained stress - strain data, various parameters of the modified Zerilli-Armstrong (m – Z - A) model were calculated. The constitutive equations of 21 - 4N heat-resistant steel based on the m – Z - A were established. The m – Z - A model can well describe the rheological behavior of 21 - 4N heat-resistant steel. The simulation process can be completed successfully, indicating that the established models can be used for the simulation study of thermal deformation of 21 - 4N heat-resistant steel and are correct. The results can provide some important basic data for the simulation of 21 - 4N heat resistant steel on plastic deformation process.

Keywords

21-4N; Zerilli-Armstrong; hot deformation behavior; heat-resistant steel

Hrčak ID:

237024

URI

https://hrcak.srce.hr/237024

Publication date:

1.7.2020.

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