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

Metalurgija

Y. M. Li¹  H. L. Duan¹  H. Y. Long¹  X. M. Huang¹ 

[1] College of Mechanical Engineering, North China University of Science and Technology, Hebei, Tangshan, China;

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

DOI  :  

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown