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Effect of silicon and prior deformation of austenite on isothermal transformation in low carbon steels

Cai, Minghui, Ding, Hua, Zhang, Jiansu and Li, Long 2009, Effect of silicon and prior deformation of austenite on isothermal transformation in low carbon steels, Acta metallurgica sinica (English letters), vol. 22, no. 2, pp. 100-109.

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Title Effect of silicon and prior deformation of austenite on isothermal transformation in low carbon steels
Author(s) Cai, Minghui
Ding, Hua
Zhang, Jiansu
Li, Long
Journal name Acta metallurgica sinica (English letters)
Volume number 22
Issue number 2
Start page 100
End page 109
Total pages 10
Publisher Acta metallurgica sinica (English letters)
Place of publication Shenyang, China
Publication date 2009-04
ISSN 1006-7191
Keyword(s) bainite transformation,
ferrite transformation
low carbon steel
prior deformation of austenite
Si content
Summary Isothermal transformation (TTT) behavior of the low carbon steels with two Si contents (0.50 wt pct and 1.35 wt pct) was investigated with and without the prior deformation. The results show that Si and the prior deformation of the austenite have significant effiects on the transformation of the ferrite and bainite. The addition of Si refines the ferrite grains, accelerates the polygonal ferrite transformation and the formation of M/A constituents, leading to the improvement of the strength. The ferrite grains formed under the prior deformation of the austenite become more homogeneous and refined. However, the influence of deformation on the tensile strength of both steels is dependent on the isothermal temperatures. Thermodynamic calculation indicates that Si and prior deformation reduce the incubation time of both ferrite and bainite transformation, but the effiect is weakened by the decrease of the isothermal temperatures.
Language eng
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2009, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30047722

Document type: Journal Article
Collections: Institute for Frontier Materials
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