IN SITU SYNCHROTRON X-RAY DIFFRACTION INVESTIGATION ON TENSILE PROPERTIES OF 9Ni STEEL

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	IN SITU SYNCHROTRON X-RAY DIFFRACTION INVESTIGATION ON TENSILE PROPERTIES OF 9Ni STEEL
	Zhang Yutuo 1,2; Li Cong 1,2; Wang Pei 2; Li Dianzhong 2
通讯作者	Wang Pei(pwang@imr.ac.cn)
	2016-04-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	52 期号:4 页码:403-409
摘要	9Ni steel has been widely used in liquid natural gas tanks and pipelines because of its excellent toughness at low temperature after quenching, larmellarizing and tempering heat treatment. Recently, in the cryogenic field it is used in some forgings, which have a strict demanding on the strength of this material. In order to clarify the relationship between the strength and the reversed austenite in the 9Ni steel after different temperature tempering, a systematic investigation on the amount of reversed austenite, deformation induced phase transformation (DIPT) of reversed austenite and its influence on the mechanical properties of 9Ni steel has been carried out by dilatometer, in situ synchrotron high-energy X-ray diffraction, XRD and TEM. The experimental results indicated that the amount of reversed austenite showed a parabolic trend with increase of tempering temperature and obtained the highest value after 600 degrees C tempering. And the DIPT of reversed austenite occurred after yielding during uniaxial tension test. This phenomenon induced that the yield strength of the experimental steel decreased to a minimum value after 600 degrees C tempering, and then, the value increased with further the increase of tempering temperature. However, the tensile strength of experimental steel increased with the increase of tempering temperature and reached the maximum after 640 degrees C tempering, because almost all of the reversed austenite transforms to martensite before necking.
关键词	9Ni steel in situ synchrotron radiation X-ray diffraction tensile property reversed austenite deformation induced phase transformation
资助者	National Natural Science Foundation of China
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51201167]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000374809600003
出版者	SCIENCE PRESS
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/321006/122039
专题	中国科学院金属研究所
通讯作者	Wang Pei
作者单位	1.Shenyang Ligong Univ, Coll Mat Sci & Engn, Shenyang 110159, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang Yutuo,Li Cong,Wang Pei,et al. IN SITU SYNCHROTRON X-RAY DIFFRACTION INVESTIGATION ON TENSILE PROPERTIES OF 9Ni STEEL[J]. ACTA METALLURGICA SINICA,2016,52(4):403-409.
APA	Zhang Yutuo,Li Cong,Wang Pei,&Li Dianzhong.(2016).IN SITU SYNCHROTRON X-RAY DIFFRACTION INVESTIGATION ON TENSILE PROPERTIES OF 9Ni STEEL.ACTA METALLURGICA SINICA,52(4),403-409.
MLA	Zhang Yutuo,et al."IN SITU SYNCHROTRON X-RAY DIFFRACTION INVESTIGATION ON TENSILE PROPERTIES OF 9Ni STEEL".ACTA METALLURGICA SINICA 52.4(2016):403-409.