Modelling of dynamic recrystallisation kinetics in austenitic stainless and hypereutectoid steels

Modelling of dynamic recrystallisation kinetics in austenitic stainless and hypereutectoid steels

Two important parameters for dynamic recrystallisation can be derived from changes in the strain hardening rate: the critical strain for initiation of dynamic recrystallisation and the point of maximum softening. In the present work, these values are determined from stress-strain data obtained by co...

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Veröffentlicht in:Materials science and technology 2006-05, Vol.22 (5), p.519-524
Hauptverfasser: Stewart, G. R., Elwazri, A. M., Yue, S., Jonas, J. J.
Format: Artikel
Sprache:eng
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Austenitic stainless steel
CRITICAL STRAIN
DYNAMIC RECRYSTALLISATION
EBSD
HYPEREUTECTOID STEEL
Kinetics
Microstructure
PEAK STRAIN
RECRYSTALLISATION KINETICS
Recrystallization
STAINLESS STEEL
Stress-strain curves
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container_issue 5
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creator Stewart, G. R.
Elwazri, A. M.
Yue, S.
Jonas, J. J.
description Two important parameters for dynamic recrystallisation can be derived from changes in the strain hardening rate: the critical strain for initiation of dynamic recrystallisation and the point of maximum softening. In the present work, these values are determined from stress-strain data obtained by compression testing over the range of 900-1100°C. The resulting strains are used to derive a kinetic model of dynamic recrystallisation for two materials: 304 austenitic stainless steel and a hypereutectoid plain carbon steel. The values of the mechanical parameters used to define the proposed model are confirmed with the aid of metallographic analysis of the recrystallised microstructures.
doi_str_mv 10.1179/026708306X81478
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subjects Austenitic stainless steel
CRITICAL STRAIN
DYNAMIC RECRYSTALLISATION
EBSD
HYPEREUTECTOID STEEL
Kinetics
Microstructure
PEAK STRAIN
RECRYSTALLISATION KINETICS
Recrystallization
STAINLESS STEEL
Stress-strain curves
title Modelling of dynamic recrystallisation kinetics in austenitic stainless and hypereutectoid steels
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