Dynamic Continuous Cooling Transformation Behavior of A Novel Cu-bearing Pipeline Steel

doi:10.2355/isijinternational.ISIJINT-2016-286

IMR OpenIR

	Dynamic Continuous Cooling Transformation Behavior of A Novel Cu-bearing Pipeline Steel
	Shi, Xianbo 1,2; Yan, Wei 1; Wang, Wei 1; Yang, Zhenguo 1; Shan, Yiyin 1; Yang, Ke 1
通讯作者	Yang, Ke(kyang@imr.ac.cn)
	2016
发表期刊	ISIJ INTERNATIONAL
ISSN	0915-1559
卷号	56 期号:12 页码:2284-2289
摘要	Study on continuous cooling transformation (CCT) behavior is an essential issue before thermo-mechanical processing for a new steel. In this study, dynamic CCT characteristics and microstructural evolution of a novel Cu-bearing pipeline steel with different Cu content (1.06%, 1.46% and 2.00%) were investigated by means of a combined method of dilatometry and metallography. The microstructure developed at a cooling rate range of 0.05 to 30 degrees C/s consisted of pearlite, polygonal ferrite, quasi-polygonal ferrite and acicular ferrite. More Cu addition could lower the transformation temperature for austenite to ferrite and lead to an increase in the driving force for the acicular ferrite transformation, resulting in a full acicular ferrite for 2.0 Cu steel at cooling rate above 2 degrees C/s. The precipitation behavior of Cu-rich phase during continuous cooling showed that Cu precipitation could occur in the acicular ferrite, which made a hardness peak on the hardness vs cooling rate curve of 2.0Cu steel at the cooling rate of 2 degrees C/s. However, no Cu precipitate was detected in the acicular ferrite at higher cooling rate for 2.0 Cu steel. Higher supersaturation of Cu in austenite and a short incubation period of Cu-rich phase precipitation were assumed to allow the Cu precipitation to occur in the auto-aging after acicular ferrite transformation.
关键词	pipeline steel copper addition continuous cooling transformation microstructure Cu precipitation
资助者	National Key Technologies R&D Program of China ; National Natural Science Foundation of China
DOI	10.2355/isijinternational.ISIJINT-2016-286
收录类别	SCI
语种	英语
资助项目	National Key Technologies R&D Program of China[2011BAE25B03] ; National Natural Science Foundation of China[51271175]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000390733000023
出版者	IRON STEEL INST JAPAN KEIDANREN KAIKAN
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/123424
专题	中国科学院金属研究所
通讯作者	Yang, Ke
作者单位	1.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Shi, Xianbo,Yan, Wei,Wang, Wei,et al. Dynamic Continuous Cooling Transformation Behavior of A Novel Cu-bearing Pipeline Steel[J]. ISIJ INTERNATIONAL,2016,56(12):2284-2289.
APA	Shi, Xianbo,Yan, Wei,Wang, Wei,Yang, Zhenguo,Shan, Yiyin,&Yang, Ke.(2016).Dynamic Continuous Cooling Transformation Behavior of A Novel Cu-bearing Pipeline Steel.ISIJ INTERNATIONAL,56(12),2284-2289.
MLA	Shi, Xianbo,et al."Dynamic Continuous Cooling Transformation Behavior of A Novel Cu-bearing Pipeline Steel".ISIJ INTERNATIONAL 56.12(2016):2284-2289.