Determination of the continuous cooling transformation diagram of a high strength low alloyed steel
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The continuous cooling transformation diagram of a high strength low alloyed steel was determined by a dilatometer and microscopic analysis (OM, SEM) as well as thermodynamic analysis. As expected, Widmanstätten ferrite, bainite and martensite coexisted for most cooling rates, which made it difficult to determine the transformation kinetics of individual phases. However, peaks were clearly observed in the dilatometric $$\frac{{d\left( {LVDT} \right)}}{{dT}}$$ curves. By overlapping the $$\frac{{d\left( {LVDT} \right)}}{{dT}}$$ curves, which were determined using various cooling rates, peaks were separated and the peak rate temperatures, as well as the temperature at the start of transformation (5%) and the end of transformation (95%) of an individual phase, were determined. A SEM analysis was also conducted to identify which phase existed and to quantify the volume fraction of each phase. It was confirmed that the additional $$\frac{{d\left( {LVDT} \right)}}{{dT}}$$ curve analysis described the transformation behavior more precisely than the conventional continuous cooling transformation diagram, as determined by the volume measured from the microstructure analysis.Keywordsalloysthermomechanical processingphase transformationdilatometryCCTReferences1.R. Kuziak, R. Kawalla, and S. Waengler, Arch. Civ. Mech. Eng. 8, 103 (2008).CrossRefGoogle Scholar2.D. Bhattacharya, Tecnologia em Metalurgia, Materiais e Mineracao 11, 371 (2014).CrossRefGoogle Scholar3.J. Lee, M. Lee, H. Do, S. Kim, and N. Kang, Korean J. Met. Mater. 52, 113 (2014).CrossRefGoogle Scholar4.C.-H. Lee, M.-G. Park, J. Moon, T.-H. Lee, N. H. Kang, and H. C. Kim, Korean J. Met. Mater. 53, 312 (2015).CrossRefGoogle Scholar5.H. H. Cho, Y. G. Cho, Y. R. Lm, J. K. Lee, J. H. Kwak, and H. N. Han, J. Mater. Process. Tech. 210, 907 (2010).CrossRefGoogle Scholar6.A. V. Marmulev, L. M. Kaputkina, G. Herman, and E. I. 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Honeycombe, Steels: microstructure and properties 3 rd ed, p. 95, Butterworth-Heinemann, Oxford, UK (2011).Google ScholarCopyright information© The Korean Institute of Metals and Materials and Springer Science+Business Media Dordrecht 2016Authors and AffiliationsHun Chul Kang1Bong June Park1Ji Hun Jang2Kwang Soon Jang2Kyung Jong Lee2Email author1.R&D CenterHyundai Steel CompanyDangjinRepublic of Korea2.Department of Materials Science and EngineeringHanyang UniversitySeoulRepublic of Korea About this article CrossMark Print ISSN 1598-9623 Online ISSN 2005-4149 Publisher Name The Korean Institute of Metals and Materials About this journal Reprints and Permissions Article actions function trackAddToCart() { var buyBoxPixel = new webtrekkV3({ trackDomain: "springergmbh01.webtrekk.net", trackId: "196033507532344", domain: "link.springer.com", contentId: "springer_com.buybox", product: "10.1007/s12540-016-6269-1_Determination of the continuous co", productStatus: "add", productCategory : { 1 : "ppv" }, customEcommerceParameter : { 9 : "link.springer.com" } }); buyBoxPixel.sendinfo(); } function trackSubscription() { var subscription = new webtrekkV3({ trackDomain: "springergmbh01.webtrekk.net", trackId: "196033507532344", domain: "link.springer.com", contentId: "springer_com.buybox" }); subscription.sendinfo({linkId: "inst. subscription info"}); } window.addEventListener("load", function(event) { var viewPage = new webtrekkV3({ trackDomain: "springergmbh01.webtrekk.net", trackId: "196033507532344", domain: "link.springer.com", contentId: "SL-article", product: "10.1007/s12540-016-6269-1_Determination of the continuous co", productStatus: "view", productCategory : { 1 : "ppv" }, customEcommerceParameter : { 9 : "link.springer.com" } }); viewPage.sendinfo(); }); Log in to check your access to this article Buy (PDF)EUR 34,95 Unlimited access to full article Instant download (PDF) Price includes local sales tax if applicable Find out about institutional subscriptions Export citation .RIS Papers Reference Manager RefWorks Zotero .ENW EndNote .BIB BibTeX JabRef Mendeley Share article Email Facebook Twitter LinkedIn Cookies We use cookies to improve your experience with our site. 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