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Spreadsheet modelling of grain size evolution during rod rolling

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Version 1 2017-07-21, 11:46
journal contribution
posted on 2024-06-03, 11:01 authored by TM Maccagno, JJ Jonas, Peter HodgsonPeter Hodgson
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.

History

Journal

ISIJ international

Volume

36

Pagination

720-728

Location

Tokyo, Japan

Open access

  • Yes

ISSN

0915-1559

eISSN

1347-5460

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

1996, ISIJ

Issue

6

Publisher

Iron and Steel Institute of Japan

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