Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (10): 1403-1406.DOI: 10.12068/j.issn.1005-3026.2016.10.008

• Materials & Metallurgy • Previous Articles     Next Articles

Preferential Nucleation Model at Triple Junction and Its Dynamic Recrystallization Simulation

GUAN Xiao-jun1,2, FU Jie1,2   

  1. 1. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
  • Received:2015-06-16 Revised:2015-06-16 Online:2016-10-15 Published:2016-10-14
  • Contact: GUAN Xiao-jun
  • About author:-
  • Supported by:
    -

Abstract: In order to perform preferential nucleation at triple junction during dynamic recrystallization (DRX), a method of identifying the cell existed at triple junction and a preferential nucleation model at triple junction were proposed on the basis of the Moore neighbor of cellular automata. The rationality and application of the model were proved by simulating the DRX process of HPS485wf steel. The results showed that the proposed method and model have the ability to simulate the DRX more effectively. Compared with those from the traditional models, the results from the present model don’t only maintain the evolution of multiple rounds, microstructural feature, the “S-type” curve between area fraction and strain, the simulated flow stress with an accuracy of 0.1% in the process of DRX, and also reveal the preferential nucleation at triple junction, which would provide a more realistic DRX nucleation.

Key words: dynamic recrystallization, triple junction, preferential nucleation, cellular automata, simulation

CLC Number: