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Microstructure evolution modeling of square-diamond pass hot bar rolling of AISI 4135 steel

Lee, Ho-Won, Kwon, Hyuck-Cheol, Im, Yong-Taek and Hodgson, Peter D. 2006, Microstructure evolution modeling of square-diamond pass hot bar rolling of AISI 4135 steel, Computer methods in materials science, vol. 6, no. 3, pp. 140-149.

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Title Microstructure evolution modeling of square-diamond pass hot bar rolling of AISI 4135 steel
Author(s) Lee, Ho-Won
Kwon, Hyuck-Cheol
Im, Yong-Taek
Hodgson, Peter D.
Journal name Computer methods in materials science
Volume number 6
Issue number 3
Start page 140
End page 149
Publisher AKAPIT
Place of publication Lodz, Poland
Publication date 2006
ISSN 1641-8581
Keyword(s) austenite grain size
AISI4135
numerical prediction
recrystallization
hot bar rolling
Summary In this study, kinetics of the static (SRX) and metadynamic recrystallization (MDRX) of AISI4135 steel was investigated using hot torsion tests. Continuous torsion tests were carried out to determine the critical strain for dynamic recrystallization (DRX). The times for 50% recrystallization of SRX and MDRX were determined, respectively, by means of interrupted torsion tests. Furthermore, austenite grain size (AGS) evolution due to recrystallization (RX) was measured by optical microscopy. With the help of the evolution model established, the AGS for hot bar rolling of AISI4135 steel was predicted numerically. The predicted AGS values were compared with the results using the other model available in the literature and experimental results to verify its validity. Then, numerical predictions depending on various process parameters such as interpass time, temperature, and roll speed were made to investigate the effect of these parameters on AGS distributions for square-diamond pass rolling. Such numerical results were found to be beneficial in understanding the effect of processing conditions on the microstructure evolution better and control the rolling processes more accurately.
Notes Reproduced with the kind permission of the copyright owner.
Language eng
Field of Research 091499 Resources Engineering and Extractive Metallurgy not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2006, AKAPIT
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30009113

Document type: Journal Article
Collections: Centre for Material and Fibre Innovation
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.