Crystallographic study of grain refinement in low and medium carbon steels

Li, Ming, Li, Jianmin, Qiu, Dong, Zheng, Qing, Wang, Geoff and Zhang, Ming-Xing (2016) Crystallographic study of grain refinement in low and medium carbon steels. Philosophical Magazine, 96 15: 1556-1578. doi:10.1080/14786435.2016.1171413

Author Li, Ming
Li, Jianmin
Qiu, Dong
Zheng, Qing
Wang, Geoff
Zhang, Ming-Xing
Title Crystallographic study of grain refinement in low and medium carbon steels
Journal name Philosophical Magazine   Check publisher's open access policy
ISSN 1478-6443
Publication date 2016-04-21
Year available 2016
Sub-type Article (original research)
DOI 10.1080/14786435.2016.1171413
Open Access Status Not Open Access
Volume 96
Issue 15
Start page 1556
End page 1578
Total pages 23
Place of publication Abingdon, Oxfordshire, United Kingdom
Publisher Taylor & Francis
Collection year 2017
Language eng
Formatted abstract
In order to clarify and articulate the long-standing problems associated with the role of various compounds in grain refinement of as-cast steels, a comprehensive crystallographic study on grain refiners in a number of low carbon steels has been conducted using the edge-to-edge matching (E2EM) model, which has been successfully applied to explain and predict effective grain refiners in light metals. Five commonly investigated compounds, namely NbO, CeS, TiN, Ce2O3 and TiC, in steels were examined. According to the extent of crystallographic matching, the predicted grain refining potency of these five grain refiners is ranked in the order of NbO > CeS >TiN > Ce2O3 > TiC, which is consistent with previously reported experimental results. Four different orientation relationships between δ-ferrite and these grain refiners were predicted. One of them has been verified by previously published experimental data. The similarity and the advantages of the E2EM model over conventional Bramfitt’s model were also discussed.
Keyword Crystallography
Grain refinement
Heterogeneous nucleation
Low carbon steel
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
School of Chemical Engineering Publications
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