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An Investigation into the Austenite Decomposition Behaviour and Post-Forming Tempering Response of Two 1800 MPa Grades of Press Hardening Steels

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dc.contributor.advisor Bardelcik, Alexander
dc.contributor.advisor Wells, Mary
dc.contributor.author Bourque, Claire
dc.date.accessioned 2019-12-20T19:05:22Z
dc.date.copyright 2019-12-12
dc.date.created 2019-12-12
dc.date.issued 2019-12-20
dc.identifier.uri http://hdl.handle.net/10214/17678
dc.description.abstract In this research, two different 1800 MPa grades of press-hardening steel were investigated; one with 0.30 wt% and the other 0.32 wt% of Carbon. The suitability of an austenite decomposition model after cooling and the effect of short tempering times after quenching on the final mechanical properties was examined. To assess the austenite decomposition model, both materials were subject to a variety of constant cooling and resulted in a mixed-phase of bainite, martensite, and ferrite. The Gleeble experiments were simulated using LS-Dyna and a thermal-mechanical-microstructural model. In the second investigation (Part II – Short Cycle Tempering), both steels were fully quenched in the Gleeble to produce a fully martensitic microstructure and tempered at temperatures ranging from 100 to 700 °C and times of 0.5 to 15 s For both experiments microhardness tests were conducted on the specimens and a FESEM was used to characterize and quantify the resultant mixed-phase microstructures. en_US
dc.language.iso en en_US
dc.rights Attribution-NoDerivatives 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by-nd/4.0/ *
dc.subject UHSS en_US
dc.subject Tempering en_US
dc.subject Critical Cooling en_US
dc.title An Investigation into the Austenite Decomposition Behaviour and Post-Forming Tempering Response of Two 1800 MPa Grades of Press Hardening Steels en_US
dc.type Thesis en_US
dc.degree.programme Animal and Poultry Science en_US
dc.degree.name Master of Applied Science en_US
dc.degree.department School of Engineering en_US
dc.description.embargo 2020-12-12
dc.rights.license All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.


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Attribution-NoDerivatives 4.0 International Except where otherwise noted, this item's license is described as Attribution-NoDerivatives 4.0 International