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Transmission electron microscopy of martensite/austenite islands in pipeline steel X70
Wang C.2; Wu X.2; Liu J.1; Xu N.2
2006-11-25
Source PublicationMaterials Science and Engineering A
ISSN09215093
Volume438-440Issue:SPEC. ISS.Pages:267-271
AbstractThe fine structure of martensite/austenite (M/A) islands in pipeline steel X70 was investigated using transmission electron microscopy. It was shown that the microstructure of the steel undergoing thermo-mechanical controlled processing, comprises a majority of irregular blocky ferrite and acicular ferritic constituents and a small amount of so-called M/A islands which in turn consisted of retained austenite and martensite plates different in size and orientation. Microtwins and midrib are usually formed within a martensite plate, which is an indication of the occurrence of high-carbon martensite. It was in addition found that the amount of the M/A islands decreased slightly with increasing the cooling rate after the hot deformation, and the morphology of the M/A islands changed from thick, irregular long strip to thin, short rods. The holding temperature after the fast cooling had no evident effect on the amount of the M/A islands, though lowering the holding temperature could yield a finer and more dispersive M/A islands. © 2006.
KeywordM/A islands Pipeline steel TEM
DOI10.1016/j.msea.2006.02.118
URLView the original
Language英語
Citation statistics
Cited Times [WOS]:35   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionInstitute of Chinese Medical Sciences
Affiliation1.Anshan Iron and Steel Company
2.University of Science and Technology Beijing
Recommended Citation
GB/T 7714
Wang C.,Wu X.,Liu J.,et al. Transmission electron microscopy of martensite/austenite islands in pipeline steel X70[J]. Materials Science and Engineering A,2006,438-440(SPEC. ISS.):267-271.
APA Wang C.,Wu X.,Liu J.,&Xu N..(2006).Transmission electron microscopy of martensite/austenite islands in pipeline steel X70.Materials Science and Engineering A,438-440(SPEC. ISS.),267-271.
MLA Wang C.,et al."Transmission electron microscopy of martensite/austenite islands in pipeline steel X70".Materials Science and Engineering A 438-440.SPEC. ISS.(2006):267-271.
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