UM  > 科技學院  > 機電工程系
Thermal, magnetic and composition analyses of the reverse transformation of intermetallic sigma phase to ferrite
Lo K.H.1; Shek C.H.2; Zhang W.W.2; Lai J.K.L.2
2010-04-01
Source PublicationJournal of Materials Science
ISSN00222461 15734803
Volume45Issue:7Pages:1790-1795
Abstract

The reverse transformation of the sigma phase to ferrite in a duplex stainless steel upon heating has been studied by using differential thermal analysis (DTA), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), X-ray diffraction (XRD), quantitative metallography and magnetic susceptibility measurement. It has been demonstrated that the reverse transformation of the sigma phase to ferrite is sensitively affected by the morphology of the sigma phase. However, EDS has shown that the composition of the sigma phase does not significantly affect its reverse transformation behaviour. Magnetic susceptibility measurements and TEM have revealed that untransformed, residual ferrite is present even after prolonged annealing between 873 and 1173 K and hence it does play a role in the sigma-to-ferrite reverse transformation. Quantitative metallography was employed to follow the coarsening of the sigma phase upon annealing and DTA was used to estimate its enthalpies of dissolution. As a potential application, a method for temperature monitoring using duplex stainless steels and DTA is suggested. © 2010 Springer Science+Business Media, LLC.

DOI10.1007/s10853-009-4156-6
URLView the original
Indexed BySCI
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000274096400009
Fulltext Access
Citation statistics
Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Affiliation1.Universidade de Macau
2.City University of Hong Kong
Recommended Citation
GB/T 7714
Lo K.H.,Shek C.H.,Zhang W.W.,et al. Thermal, magnetic and composition analyses of the reverse transformation of intermetallic sigma phase to ferrite[J]. Journal of Materials Science,2010,45(7):1790-1795.
APA Lo K.H.,Shek C.H.,Zhang W.W.,&Lai J.K.L..(2010).Thermal, magnetic and composition analyses of the reverse transformation of intermetallic sigma phase to ferrite.Journal of Materials Science,45(7),1790-1795.
MLA Lo K.H.,et al."Thermal, magnetic and composition analyses of the reverse transformation of intermetallic sigma phase to ferrite".Journal of Materials Science 45.7(2010):1790-1795.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Lo K.H.]'s Articles
[Shek C.H.]'s Articles
[Zhang W.W.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Lo K.H.]'s Articles
[Shek C.H.]'s Articles
[Zhang W.W.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Lo K.H.]'s Articles
[Shek C.H.]'s Articles
[Zhang W.W.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.