Metallurgical and Materials Transactions A

, Volume 39, Issue 6, pp 1371–1381 | Cite as

Hot Deformation and Recrystallization of Austenitic Stainless Steel: Part II. Post-deformation Recrystallization

Article
First Online:

Abstract

The postdeformation recrystallization behavior of a hot-deformed austenitic stainless steel was investigated based on the first part of this study, in which the microstructure development during hot deformation and, in particular, the evolution of dynamic recrystallization (DRX), was studied. The effect of different parameters such as strain, strain rate, and temperature were examined. The dependency of the time for 50 pct softening, t 50, changed from “strain dependent” to “strain independent” at a transition strain (ε*) that was in the steady-state area of the hot deformation flow curve. The fully recrystallized microstructure showed a similar transition in strain sensitivity. However, this occurred at stains greater than ε*. A mathematical model was developed to predict the transition strain under different deformation conditions. Microstructural measurements show that the transition strain corresponds to approximately 50 pct DRX in the deformed structure at the point of unloading.

Keywords

Recrystallization Austenitic Stainless Steel Peak Strain Softening Behavior Transition Strain 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Notes

Acknowledgment

This work was supported by Australia Research Council funding through the award of a Federation fellowship.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2008

Authors and Affiliations

  • A. Dehghan-Manshadi
    • 1
  • M.R. Barnett
    • 2
  • P.D. Hodgson
    • 2
  1. 1.Faculty of EngineeringUniversity of WollogongWollogongAustralia
  2. 2.Centre for Materials and Fibre InnovationDeakin UniversityGeelongAustralia

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