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IN SITU SYNCHROTRON X-RAY DIFFRACTION INVESTIGATION ON TENSILE PROPERTIES OF 9Ni STEEL
Zhang Yutuo1,2; Li Cong1,2; Wang Pei2; Li Dianzhong2
Corresponding AuthorWang Pei(pwang@imr.ac.cn)
2016-04-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume52Issue:4Pages:403-409
Abstract9Ni 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.
Keyword9Ni steel in situ synchrotron radiation X-ray diffraction tensile property reversed austenite deformation induced phase transformation
Funding OrganizationNational Natural Science Foundation of China
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51201167]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000374809600003
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/122039
Collection中国科学院金属研究所
Corresponding AuthorWang Pei
Affiliation1.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
Recommended Citation
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.
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