Effect of Mn Content on Microstructure and Cryogenic Mechanical Properties of a 7% Ni Steel

doi:10.1007/s40195-018-0700-1

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	Effect of Mn Content on Microstructure and Cryogenic Mechanical Properties of a 7% Ni Steel
	Cao, HW ; Luo, XH ; Zhan, GF ; Liu, S 3
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2018-07-01
卷号	31 期号:7 页码:699-705
关键词	7% Ni steel Mn content Microstructure Reversed austenite Cryogenic mechanical properties
ISSN号	1006-7191
DOI	10.1007/s40195-018-0700-1
英文摘要	The effect of Mn content on the microstructure and cryogenic mechanical properties of a 7% Ni steel was investigated within the Mn content range from 0.13% to 0.36%. The microstructure of the steel as determined by optical microscopy, scanning electron microscopy, transmission electron microscopy, electron backscattering diffraction and X-ray diffraction was presented, and the low-temperature mechanical properties were given. The size of prior austenite grain did not change a lot as Mn content increased. Film-like reversed austenite, having high stability, was found mainly in the specimens with lower Mn content; however, in the specimen with the highest Mn content, the role of Mn was not obvious in stabilizing reversed austenite. Besides, with increasing Mn content, the amount of reversed austenite at grain boundaries gradually decreased. The variable Mn content had a significant effect on cryogenic toughness, but not apparent on cryogenic tensile strength or yield strength. An excellent combination of cryogenic tensile and impact properties was obtained when Mn content of steel was 0.13%.
学科主题	Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000433167400004
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/80142]
专题	金属研究所_中国科学院金属研究所
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 2.[Cao, Hong-Wei 3.Luo, Xing-Hong 4.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China 5.Wuhan Iron & Steel Grp Corp, Res & Dev Ctr, Wuhan 430080, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Cao, HW,Luo, XH,Zhan, GF,et al. Effect of Mn Content on Microstructure and Cryogenic Mechanical Properties of a 7% Ni Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2018,31(7):699-705.
APA	Cao, HW,Luo, XH,Zhan, GF,&Liu, S.(2018).Effect of Mn Content on Microstructure and Cryogenic Mechanical Properties of a 7% Ni Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,31(7),699-705.
MLA	Cao, HW,et al."Effect of Mn Content on Microstructure and Cryogenic Mechanical Properties of a 7% Ni Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS 31.7(2018):699-705.