Spreadsheet modelling of grain size evolution during rod rolling

Maccagno, T. M., Jonas, J. J. and Hodgson, Peter D. 1996, Spreadsheet modelling of grain size evolution during rod rolling, ISIJ international, vol. 36, no. 6, pp. 720-728, doi: 10.2355/isijinternational.36.720.

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Title Spreadsheet modelling of grain size evolution during rod rolling
Author(s) Maccagno, T. M.
Jonas, J. J.
Hodgson, Peter D.
Journal name ISIJ international
Volume number 36
Issue number 6
Start page 720
End page 728
Total pages 9
Publisher Iron and Steel Institute of Japan
Place of publication Tokyo, Japan
Publication date 1996
ISSN 0915-1559
Keyword(s) rod rolling
static recrystallization
dynamic recrystallization
metadynamic recrystallization
austenite grain size
redundant strain
desktop computers
Summary An analysis was conducted of the pass-by-pass evolution of austenite grain size during the rod rolling of plain carbon steel. This was achieved by organizing previously-developed equations relating grain size and hot working parameters into a commercial computer spreadsheet program. By considering the substantial "redundant" strains developed during rod rolling, the analysis reveals that metadynamic recrystallization (MRX) is the dominant microstructural process, and this is confirmed by the mill grain size measurements reported previously. The spreadsheet was also employed to examine the effects of modifications to rod rolling practice aimed at refining the austenite grain size. Little benefit is obtained by increasing the strain rate or by reducing the distance from the final rolling pass to the laying head. On the other hand, increasing the cooling rate on the forced-air cooling deck should lead to measurable grain refinement. Lowering the temperature during rolling can lead to even more refinement, and various strategies to achieve this are discussed.
Language eng
DOI 10.2355/isijinternational.36.720
Field of Research 09 Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1996, ISIJ
Persistent URL http://hdl.handle.net/10536/DRO/DU:30098412

Document type: Journal Article
Collection: Office of the Deputy Vice-Chancellor Research
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