Dynamic recrystallization kinetics of AISI 403 stainless steel using hot compression test

Document Type : Research Paper

Authors

1 Department of Materials and Polymer Engineering, Hakim Sabzevari University, Sabzevar, Iran

2 Sabzevar, Iran

3 Department of Materials Science and Engineering, Iran University of Sience and Technology, Tehran, Iran

4 Department of Materials Science and Engineering, Hamedan University of Technology, Hamedan, Iran

Abstract

In this work dynamic recrystallization behavior of AISI 403 martensitic stainless steel was studied using hot compression tests over temperature range of 900 C -1200 C and strain rate range of 0.001 s-1 - 1 s-1. The obtained flow curves showed that the hot compression behavior of the alloy is controlled by dynamic recrystallization. The flow stress and strain corresponding to the critical, peak and onset of steady state region were related to the Zener-Hollomon parameter using simple power equations. The variation of dynamic recrystallization fraction with strain showed that restoration kinetics is enhanced with increasing temperature and decreasing strain rate. The development of DRX was modeled using Avrami Kinetics equation. The equations proposed by Baragar and Cingara-McQueen were used to develop a new model capable of predicting the flow curves up to the onset of steady state flow region. This work softening is mainly controlled by the phenomenon dynamic recrystallization.

Keywords

References

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Iranian Journal of Materials Forming
Volume 1, Issue 2
October 2014
Pages 32-43

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