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Refinement of As-cast Austenite Grain in Carbon Steel by Addition of Titanium

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ISIJ Int. 49(9)_ 1362-1366 (2009).pdf1.31 MBPDFView/Open
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Title: Refinement of As-cast Austenite Grain in Carbon Steel by Addition of Titanium
Authors: Sasaki, Masayoshi Browse this author
Matsuura, Kiyotaka Browse this author →KAKEN DB
Ohsasa, Kenichi Browse this author
Ohno, Munekazu Browse this author →KAKEN DB
Keywords: carbon steel
peritectic reaction
austenite grain
grain refinement
titanium carbonitride
Issue Date: 15-Sep-2009
Publisher: Iron and Steel Institute of Japan
Journal Title: ISIJ International
Volume: 49
Issue: 9
Start Page: 1362
End Page: 1366
Publisher DOI: 10.2355/isijinternational.49.1362
Abstract: Effects of Ti addition on as-cast austenite structure of S45C steel have been investigated by means of furnace cooling experiment at a cooling rate of 0.03°C/s, focusing on the Ti addition ranging from 0 to 0.5 mol%. The Ti addition reduces average austenite grain diameter down to a size comparable to secondary dendrite arm spacing. In samples with the Ti addition, the austenite grain boundary is located at inter-dendritic position where Ti(C,N) particles exist and the refinement of austenite grain structure is ascribable to pinning effect of the Ti(C,N) particle formed in L+γ-Fe+Ti(C,N) phase field. The increment of Ti addition does not substantially change the size of Ti(C,N) particle but increases the number of the Ti(C,N) particles, leading to further refinement of the austenite grains.
Rights: 著作権は日本鉄鋼協会にある
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 大野 宗一

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