Vanadium microalloying for ultra-high strength steel sheet treated by hot-dip metallising Hutchinson, B, Martin, D, Karlsson, O, Lindberg, F, Thoors, H, Marceau, R and Taylor, A 2017, Vanadium microalloying for ultra-high strength steel sheet treated by hot-dip metallising, Materials science and technology, vol. 33, no. 4, pp. 497-506, doi: 10.1080/02670836.2016.1235841. Attached Files Name Description MIMEType Size Downloads Title Vanadium microalloying for ultra-high strength steel sheet treated by hot-dip metallising Author(s) Hutchinson, B Martin, D Karlsson, O Lindberg, F Thoors, H Marceau, R orcid.org/0000-0003-3612-8762 Taylor, A Journal name Materials science and technology Volume number 33 Issue number 4 Start page 497 End page 506 Total pages 10 Publisher Taylor & Francis Place of publication Abingdon, Eng. Publication date 2017 ISSN 1743-2847 Keyword(s) Sheet steel Vanadium Galvanising Galvanealing Strength Ductility Bendability Microstructures Science & Technology Technology Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science MARTENSITE MICROSTRUCTURE BEHAVIOR HARDNESS Summary Ultra-high strength steel sheets have been subjected to heat treatments that simulate the thermal cycles in hot-dip galvanising and galvannealing processes and evaluated with respect to their resulting mechanical properties and microstructures. The steels contained suitable contents of carbon (∼0.2%), manganese (1.2%) and chromium (0.4%) to ensure that they could be fully transformed to martensite after austenitisation followed by rapid cooling in a continuous annealing line, prior to galvanising. Different contents of vanadium (0–0.1%) and nitrogen (0.002–0.012%) were used to investigate the possible role of these microalloying elements on the strength of the tempered martensite. Vanadium, especially when in combination with a raised nitrogen content, helps to resist the effect of tempering so that a larger proportion of the initial strengthening is preserved after the galvanising cycle, giving tensile strength levels exceeding 1000 MPa. Different deoxidation practices using aluminium or silicon have also been included. These showed similar strength levels at corresponding carbon contents but the bendability of the Si-killed steel sheet was considerably superior. Microstructural examinations have been made on the annealed steels but the reason for the beneficial effect of vanadium is still not fully explained. It is concluded that microalloying with vanadium is a very promising approach in the development of corrosion-resistant ultra-high strength steel sheet products. Language eng DOI 10.1080/02670836.2016.1235841 Field of Research 091207 Metals and Alloy Materials Socio Economic Objective 970109 Expanding Knowledge in Engineering HERDC Research category C1 Refereed article in a scholarly journal ERA Research output type C Journal article Copyright notice ©2016, Taylor & Francis Persistent URL http://hdl.handle.net/10536/DRO/DU:30086515 Document type: Journal Article Collections: Institute for Frontier Materials GTP Research Related Links Link Description Connect to published version Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Thu, 06 Oct 2016, 13:48:47 EST Thu, 20 Oct 2016, 12:37:51 EST Mon, 24 Oct 2016, 07:26:11 EST Wed, 26 Oct 2016, 14:54:23 EST Thu, 27 Oct 2016, 09:23:21 EST Fri, 04 Nov 2016, 10:58:33 EST Mon, 07 Nov 2016, 12:00:50 EST Mon, 07 Nov 2016, 12:05:56 EST Mon, 07 Nov 2016, 12:09:53 EST Wed, 09 Nov 2016, 11:51:49 EST Sat, 22 Apr 2017, 02:31:51 EST Mon, 22 May 2017, 13:55:31 EST Mon, 22 May 2017, 13:57:40 EST Filtered Full Citation counts:   Cited 2 times in TR Web of Science Cited 3 times in Scopus Search Google Scholar Access Statistics: 122 Abstract Views, 1 File Downloads  -  Detailed Statistics Created: Mon, 24 Oct 2016, 07:26:11 EST

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