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Article: Stress-strain Relationship of Cold-formed Lean Duplex Stainless Steel at Elevated Temperatures

TitleStress-strain Relationship of Cold-formed Lean Duplex Stainless Steel at Elevated Temperatures
Authors
Issue Date2014
PublisherElsevier. The Journal's web site is located at http://www.elsevier.com/locate/jcsr
Citation
Journal of Constructional Steel Research, 2014, v. 92, p. 103-113 How to Cite?
AbstractA test programme to examine the material properties of a relatively new cold-formed lean duplex stainless steel at elevated temperatures is presented. A total of 80 tensile coupon tests were carried out by both steady state test method and transient state test method for temperatures ranged from 24 to 900 °C. The coupons were extracted from square and rectangular hollow sections. Material properties including thermal elongation, Young's modulus, yield strength, ultimate strength and ultimate strain were obtained. The test results and available data were compared with the design values in the European Code as well as a unified equation by Chen and Young [1] for stainless steel. The lean duplex stainless steel is not covered by these design rules. Reliability analysis was carried out to assess the applicability of these existing design rules. It is shown that the material properties of lean duplex stainless steel at elevated temperatures cannot be well predicted by the existing design rules. Modification to the existing design rules for lean duplex stainless steel at elevated temperatures is proposed. The stress–strain curves of the test specimens under different temperatures were plotted and compared with stress–strain curves predicted by the unified equation using modified coefficients. It is shown that the stress–strain curves and other material properties predicted by the modified design rules agree well with the test results.
Persistent Identifierhttp://hdl.handle.net/10722/200515
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHuang, Yen_US
dc.contributor.authorYoung, Ben_US
dc.date.accessioned2014-08-21T06:49:51Z-
dc.date.available2014-08-21T06:49:51Z-
dc.date.issued2014en_US
dc.identifier.citationJournal of Constructional Steel Research, 2014, v. 92, p. 103-113en_US
dc.identifier.urihttp://hdl.handle.net/10722/200515-
dc.description.abstractA test programme to examine the material properties of a relatively new cold-formed lean duplex stainless steel at elevated temperatures is presented. A total of 80 tensile coupon tests were carried out by both steady state test method and transient state test method for temperatures ranged from 24 to 900 °C. The coupons were extracted from square and rectangular hollow sections. Material properties including thermal elongation, Young's modulus, yield strength, ultimate strength and ultimate strain were obtained. The test results and available data were compared with the design values in the European Code as well as a unified equation by Chen and Young [1] for stainless steel. The lean duplex stainless steel is not covered by these design rules. Reliability analysis was carried out to assess the applicability of these existing design rules. It is shown that the material properties of lean duplex stainless steel at elevated temperatures cannot be well predicted by the existing design rules. Modification to the existing design rules for lean duplex stainless steel at elevated temperatures is proposed. The stress–strain curves of the test specimens under different temperatures were plotted and compared with stress–strain curves predicted by the unified equation using modified coefficients. It is shown that the stress–strain curves and other material properties predicted by the modified design rules agree well with the test results.-
dc.languageengen_US
dc.publisherElsevier. The Journal's web site is located at http://www.elsevier.com/locate/jcsren_US
dc.relation.ispartofJournal of Constructional Steel Researchen_US
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Constructional Steel Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Constructional Steel Research, 2014, v. 92, p. 103-113. DOI: 10.1016/j.jcsr.2013.09.007en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleStress-strain Relationship of Cold-formed Lean Duplex Stainless Steel at Elevated Temperaturesen_US
dc.typeArticleen_US
dc.identifier.emailYoung, B: young@hku.hken_US
dc.identifier.authorityYoung, B=rp00208en_US
dc.description.naturepostprint-
dc.identifier.doi10.1016/j.jcsr.2013.09.007-
dc.identifier.scopuseid_2-s2.0-84887843498-
dc.identifier.hkuros233363en_US
dc.identifier.volume92en_US
dc.identifier.spage103en_US
dc.identifier.epage113en_US
dc.identifier.isiWOS:000329418100010-

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