Effects of Finish-rolling Temperature and Carbon Content on Microstructure and Mechanical Anisotropy of 0.04-0.13%C Steels

Steels with carbon content from 0.13 to 0.04% were rolled in temperature range 1220 to 750°C and subsequently air cooled. The microstructure as well as mechanical properties were investigated. The grain size in steels is first gradually decreased with lowering rolling temperature, and then it is fas...

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Bibliographic Details
Published in:Transactions of the Iron and Steel Institute of Japan 1988, Vol.28(2), pp.117-124
Main Authors: VODOPIVEC, Franc, GABROVŠEK, Marin, ZVOKELJ, Janez
Format: Article
Language:English
Subjects:
anisotropy in tensile ductility
grain size
hot rolling temperature
low carbon steels
mechanical properties
microstructure
recrystallisation and recovery
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Description
Summary:Steels with carbon content from 0.13 to 0.04% were rolled in temperature range 1220 to 750°C and subsequently air cooled. The microstructure as well as mechanical properties were investigated. The grain size in steels is first gradually decreased with lowering rolling temperature, and then it is fastly increased with further lowering of rolling temperature down to ferrite range. The microstructure is the more coarse and heterogeneous the less completed was the interpass recrystallisation of austenite and the more ferrite was present in steel during the rolling. The rolling in ferrite range produces a strong anisotropy in tensile ductility.
ISSN:0021-1583
1881-1183
DOI:10.2355/isijinternational1966.28.117