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

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	Effect of silicon and prior deformation of austenite on isothermal transformation in low carbon steels
其他题名	Effect of silicon and prior deformation of austenite on isothermal transformation in low carbon steels
	Cai Minghui 1; Ding Hua 1; Zhang Jiansu 2; Li Long 3
	2009
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	22 期号:2 页码:100-109
摘要	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 effects 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 effect is weakened by the decrease of the isothermal temperatures.
其他摘要	Isothermal transformation (TTT) behavior of the low carbon steels with two Si con-tents (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 effects 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 ho-mogeneous and refined. However, the influence of deformation on the tensile strength of both steels is dependent on the isothermal temperatures. Thermodynamic calcu-lation indicates that Si and prior deformation reduce the incubation time of both ferrite and bainite transformation, but the effect is weakened by the decrease of the isothermal temperatures.
关键词	Low carbon steel Si content Prior deformation of austenite Ferrite transformation Bainite transformation
收录类别	CSCD
语种	英语
资助项目	[Baoshan Iron and Steel Group]
CSCD记录号	CSCD:3507202
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/147144
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.Baoshan Iron & Steel Co Ltd, Ctr Technology, Shanghai 201900, Peoples R China 3.Natl Institute Mat Sci, Tsukuba, Ibaraki 3050047, Japan
推荐引用方式 GB/T 7714	Cai Minghui,Ding Hua,Zhang Jiansu,et al. Effect of silicon and prior deformation of austenite on isothermal transformation in low carbon steels[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2009,22(2):100-109.
APA	Cai Minghui,Ding Hua,Zhang Jiansu,&Li Long.(2009).Effect of silicon and prior deformation of austenite on isothermal transformation in low carbon steels.ACTA METALLURGICA SINICA-ENGLISH LETTERS,22(2),100-109.
MLA	Cai Minghui,et al."Effect of silicon and prior deformation of austenite on isothermal transformation in low carbon steels".ACTA METALLURGICA SINICA-ENGLISH LETTERS 22.2(2009):100-109.