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Post-fire mechanical and corrosion properties of duplex stainless steel: Comparison with ordinary reinforcing-bar steel
Xiang Li2; K.H. Lo1,2; C.T. Kwok1,2; Y.F. Sun3; K.K. Lai1
2018-06-20
Source PublicationCONSTRUCTION AND BUILDING MATERIALS
ISSN0950-0618
Volume174Pages:150-158
Abstract

This paper is a preliminary study on the merits of using duplex stainless steel (DSS) as concrete reinforcements. It looks into the post-fire mechanical and corrosion properties of the wrought DSS 2205 after annealing at 500 degrees C, and compare them with those of an ordinary rebar steel. Spinodal decomposition of the ferrite phase strengthens and embrittles the 2205 DSS. For the rebar steel, however, softening occurs. Even after the 2205 DSS is exposed to 500 degrees C for 1 week, its ductility as indicated by fracture strain is still comparable to that of the unannealed rebar steel. The present data show that after short-term exposure to temperatures under 500 degrees C, the ductility and retention of strength of the 2205 DSS are better than those of the the rebar steel. The corrosion performance of the 2205 DSS, both in 3.5% NaCl and in 3.5% NaCl + Ca(OH)(2), is also better than that of the unannealed rebar steel even if the former is exposed to 500 degrees C for 1 week.

KeywordDuplex Stainless Steel Post-fire Property Spinodal Decomposition Tensile Behaviour Pitting Behaviour
DOIhttps://doi.org/10.1016/j.conbuildmat.2018.04.110
URLView the original
Indexed BySCI
Language英语
WOS Research AreaConstruction & Building Technology ; Engineering ; Materials Science
WOS SubjectConstruction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS IDWOS:000433656300015
PublisherELSEVIER SCI LTD
The Source to ArticleWOS
Fulltext Access
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Document TypeJournal article
CollectionDEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Affiliation1.Department of Electromechanical Engineering, Faculty of Science and Technology, The University of Macau, Macau, China
2.Institute of Applied Physics and Materials Engineering, The University of Macau, Macau, China
3.Joining and Welding Research Institute, Osaka University, Japan
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Xiang Li,K.H. Lo,C.T. Kwok,et al. Post-fire mechanical and corrosion properties of duplex stainless steel: Comparison with ordinary reinforcing-bar steel[J]. CONSTRUCTION AND BUILDING MATERIALS,2018,174:150-158.
APA Xiang Li,K.H. Lo,C.T. Kwok,Y.F. Sun,&K.K. Lai.(2018).Post-fire mechanical and corrosion properties of duplex stainless steel: Comparison with ordinary reinforcing-bar steel.CONSTRUCTION AND BUILDING MATERIALS,174,150-158.
MLA Xiang Li,et al."Post-fire mechanical and corrosion properties of duplex stainless steel: Comparison with ordinary reinforcing-bar steel".CONSTRUCTION AND BUILDING MATERIALS 174(2018):150-158.
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