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A comprehensive method to identify the kinetics of static recrystallization using the hot torsion test results with an inverse solution

Khoddam,S and Hodgson,PD 2014, A comprehensive method to identify the kinetics of static recrystallization using the hot torsion test results with an inverse solution, Modelling and simulation in materials science and engineering, vol. 22, no. 8, pp. 1-1, doi: 10.1088/0965-0393/22/8/085010.

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Title A comprehensive method to identify the kinetics of static recrystallization using the hot torsion test results with an inverse solution
Author(s) Khoddam,S
Hodgson,PD
Journal name Modelling and simulation in materials science and engineering
Volume number 22
Issue number 8
Start page 1
End page 1
Total pages 1
Publisher Institute of Physics Publishing
Place of publication Bristol, Eng.
Publication date 2014-11
ISSN 0965-0393
1361-651X
Keyword(s) Hot torsion test
Inverse solution
Mechanical characterization
Recrystallization
Science & Technology
Technology
Physical Sciences
Materials Science, Multidisciplinary
Physics, Applied
Materials Science
Physics
DEFORMATION
STEELS
Summary Many difficulties exist in directly following the static recrystallization of metals, particularly during hotworking. Indirect measurement of static recrystallization has been extensively performed in the literature where, for example, the recrystallization behavior of austenite in steels has commonly been measured indirectly using the fractional softening method. This method relies on the yield stress changes during recrystallization which are physically simulated by hot torsion or compression tests. However, the inherent heterogeneity of deformation during a mechanical test leads to a non-uniform static recrystallization distribution in the test sample. This, in turn, poses a serious question concerning the reliability of the measurement since the stress calculation techniques during recrystallization are not adequately developed in the existing literature. This paper develops a computer-based method to account for heterogeneous deformation during fractional softening measurements based on the hot torsion test data. The importance of the fractional softening gradient in determining the kinetics is emphasized and deficiencies in our understanding of the basic mechanisms are highlighted. A computer-based method is introduced to generate the experimental and computational components in a cost function. The cost function is then utilized by an inverse solution to calibrate the design parameters in a static recrystallization model.
Language eng
DOI 10.1088/0965-0393/22/8/085010
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Institute of Physics Publishing
Persistent URL http://hdl.handle.net/10536/DRO/DU:30071732

Document type: Journal Article
Collection: Institute for Frontier Materials
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