Evolution of Microstructure during Isothermal Treatments of a Duplex-Austenitic 0.66C11.4Mn.9.9Al Low-Density Forging Steel and Effect on the Mechanical Properties

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dc.contributor.authorKaltzakorta, Idurre
dc.contributor.authorGutierrez, Teresa
dc.contributor.authorElvira, Roberto
dc.contributor.authorJimbert, Pello
dc.contributor.authorGuraya, Teresa
dc.date.accessioned2021-01-27T11:11:46Z
dc.date.available2021-01-27T11:11:46Z
dc.date.issued2021-01-26
dc.description.abstractIn the last decades, low-density steels for forging have increasing interest in the automotive industry, and good mechanical properties are required for their real application. This paper describes the results obtained for a 0.66C11.4Mn9.9Al duplex austenitic low-density steel after applying a set of isothermal treatments at different combinations of time and temperature, aimed to promote kappa carbide precipitation, and improve the mechanical properties obtained with a water quenching treatment. The effects of the different isothermal treatments on the microstructure and on the mechanical properties have been analyzed and compared to those obtained from a quenching heat treatment. We found that isothermal treatments in the range temperature between 550–750 °C promoted the profuse precipitation of coarse kappa carbides at grain boundaries, which dramatically reduced the ductility of the alloy, whereas a traditional quenching treatment resulted in a better combination of ductility and mechanical strength.en
dc.description.sponsorshipThis research has been carried out with a financial grant of the Basque Government under its ELKARTEK Research Program, KK-2016/00029-ABADE project and KK-2018/00016-COFADEN project.en
dc.divisionIndustria y Transporteen
dc.identifier.citationKaltzakorta, Idurre, Teresa Gutierrez, Roberto Elvira, Pello Jimbert, and Teresa Guraya. “Evolution of Microstructure During Isothermal Treatments of a Duplex-Austenitic 0.66C11.4Mn.9.9Al Low-Density Forging Steel and Effect on the Mechanical Properties.” Metals 11, no. 2 (January 26, 2021): 214. doi:10.3390/met11020214.en
dc.identifier.doi10.3390/met11020214en
dc.identifier.essn2075-4701en
dc.identifier.urihttp://hdl.handle.net/11556/1064
dc.issue.number2en
dc.journal.titleMetalsen
dc.language.isoengen
dc.page.initial214en
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)en
dc.rightsAttribution 4.0 International*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subject.keywordsLow density steelsen
dc.subject.keywordsForgingen
dc.subject.keywordsKappa carbideen
dc.subject.keywordsFeCMnAlen
dc.titleEvolution of Microstructure during Isothermal Treatments of a Duplex-Austenitic 0.66C11.4Mn.9.9Al Low-Density Forging Steel and Effect on the Mechanical Propertiesen
dc.typejournal articleen
dc.volume.number11en
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