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Effect of silicon and prior deformation of austenite on isothermal transformation in low carbon steels
Alternative TitleEffect of silicon and prior deformation of austenite on isothermal transformation in low carbon steels
Cai Minghui1; Ding Hua1; Zhang Jiansu2; Li Long3
2009
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume22Issue:2Pages:100-109
AbstractIsothermal 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.
Other AbstractIsothermal 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.
KeywordLow carbon steel Si content Prior deformation of austenite Ferrite transformation Bainite transformation
Indexed ByCSCD
Language英语
Funding Project[Baoshan Iron and Steel Group]
CSCD IDCSCD:3507202
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/147141
Collection中国科学院金属研究所
Affiliation1.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
Recommended Citation
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.
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