Effects of Microstructure on CVN Impact Toughness in Thermomechanically Processed High Strength Microalloyed Steel

CORC > 金属研究所 > 中国科学院金属研究所

	Effects of Microstructure on CVN Impact Toughness in Thermomechanically Processed High Strength Microalloyed Steel
	Jia, Tao ; Zhou, Yanlei ; Jia, Xiaoxiao ; Wang, Zhaodong
刊名	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
	2017-02-01
卷号	48A 期号:2 页码:685-696
ISSN号	1073-5623
通讯作者	Jia, T (reprint author), Northeastern Univ, State Key Lab Rolling & Automat, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China.
中文摘要	Investigation on the correlation between microstructure and CVN impact toughness is of practical importance for the microstructure design of high strength microalloyed steels. In this work, three steels with characteristic microstructures were produced by cooling path control, i.e., steel A with granular bainite (GB), steel B with polygonal ferrite (PF) and martensite-austenite (M-A) constituent, and steel C with the mixture of bainitic ferrite (BF), acicular ferrite (AF), and M-A constituent. Under the same alloy composition and controlled rolling, similar ductile-to-brittle transition temperatures were obtained for the three steels. Steel A achieved the highest upper shelf energy (USE), while large variation of impact absorbed energy has been observed in the ductile-to-brittle transition region. With apparently large-sized PF and M-A constituent, steel B shows the lowest USE and delamination phenomenon in the ductile-to-brittle transition region. Steel C exhibits an extended upper shelf region, intermediate USE, and the fastest decrease of impact absorbed energy in the ductile-to-brittle transition region. The detailed CVN impact behavior is studied and then linked to the microstructural features.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
收录类别	SCI
资助信息	National Natural Science Foundation of China [51204048]; Fundamental Research Funds for the Central Universities [N120407008]
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78323]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Jia, Tao,Zhou, Yanlei,Jia, Xiaoxiao,et al. Effects of Microstructure on CVN Impact Toughness in Thermomechanically Processed High Strength Microalloyed Steel[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2017,48A(2):685-696.
APA	Jia, Tao,Zhou, Yanlei,Jia, Xiaoxiao,&Wang, Zhaodong.(2017).Effects of Microstructure on CVN Impact Toughness in Thermomechanically Processed High Strength Microalloyed Steel.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,48A(2),685-696.
MLA	Jia, Tao,et al."Effects of Microstructure on CVN Impact Toughness in Thermomechanically Processed High Strength Microalloyed Steel".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 48A.2(2017):685-696.