IMR OpenIR
Dynamic Continuous Cooling Transformation Behavior of A Novel Cu-bearing Pipeline Steel
Shi, Xianbo1,2; Yan, Wei1; Wang, Wei1; Yang, Zhenguo1; Shan, Yiyin1; Yang, Ke1
Corresponding AuthorYang, Ke(kyang@imr.ac.cn)
2016
Source PublicationISIJ INTERNATIONAL
ISSN0915-1559
Volume56Issue:12Pages:2284-2289
AbstractStudy 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.
Keywordpipeline steel copper addition continuous cooling transformation microstructure Cu precipitation
Funding OrganizationNational Key Technologies R&D Program of China ; National Natural Science Foundation of China
DOI10.2355/isijinternational.ISIJINT-2016-286
Indexed BySCI
Language英语
Funding ProjectNational Key Technologies R&D Program of China[2011BAE25B03] ; National Natural Science Foundation of China[51271175]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000390733000023
PublisherIRON STEEL INST JAPAN KEIDANREN KAIKAN
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/123424
Collection中国科学院金属研究所
Corresponding AuthorYang, Ke
Affiliation1.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
Recommended Citation
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.
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