Role of Solute Rare Earth in Altering Phase Transformations during Continuous Cooling of a Low Alloy Cr-Mo-V Steel

doi:10.1007/s40195-023-01570-3

IMR OpenIR

	Role of Solute Rare Earth in Altering Phase Transformations during Continuous Cooling of a Low Alloy Cr-Mo-V Steel
	Jiang, Zhonghua; Wang, Pei; Li, Dianzhong
通讯作者	Jiang, Zhonghua(zhjiang12s@imr.ac.cn) ; Wang, Pei(pwang@imr.ac.cn) ; Li, Dianzhong(dzli@imr.ac.cn)
	2023-07-17
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	13
摘要	Effects of solute rare earth (RE) on continuous cooling transformation of a low-alloy Cr-Mo-V bainitic steel are investigated in detail by dilatometry, optical microscopy (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Microstructures appeared in thermal dilatometric samples of both low-alloy Cr-Mo-V (RE) steels are composed of quasi-polygonal ferrite (QPF), degenerate pearlite (DP), granular bainite (GB), lath bainite (LB), and martensite (M) depending on cooling rate. When cooling rate is lower than 2 & DEG;C/s, the addition of RE suppresses QPF transformation, and thereby inducing a broader transformation region of GB. When cooling rate ranges from 2 to 100 & DEG;C/s, the addition of RE decreases the start temperature of bainitic transformation distinctly, which results in finer bainitic ferrite grain size and higher dislocation density. The addition of RE can enhance the hardness of the low alloy Cr-Mo-V steel by affecting the aforementioned diffusional and/or partly displacive transformation. However, when cooling rate increases up to 150 & DEG;C/s, two steels have the same hardness value of about 435 HV due to only martensite obtained by displacive transformation.
关键词	Low-alloy Cr-Mo-V steel Rare earth Phase transformation Bainitic microstructures Continuous cooling transformation
资助者	National Natural Science Foundation of China ; Shenyang National Laboratory for Materials Science
DOI	10.1007/s40195-023-01570-3
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52101059] ; Shenyang National Laboratory for Materials Science[L2019F48]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001031469400001
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：1[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/321006/178556
专题	中国科学院金属研究所
通讯作者	Jiang, Zhonghua; Wang, Pei; Li, Dianzhong
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Zhonghua,Wang, Pei,Li, Dianzhong. Role of Solute Rare Earth in Altering Phase Transformations during Continuous Cooling of a Low Alloy Cr-Mo-V Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2023:13.
APA	Jiang, Zhonghua,Wang, Pei,&Li, Dianzhong.(2023).Role of Solute Rare Earth in Altering Phase Transformations during Continuous Cooling of a Low Alloy Cr-Mo-V Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,13.
MLA	Jiang, Zhonghua,et al."Role of Solute Rare Earth in Altering Phase Transformations during Continuous Cooling of a Low Alloy Cr-Mo-V Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2023):13.