{"id":{"repo_id":"ohiolink","oai_identifier":"oai:etd.ohiolink.edu:case1346250505"},"canonical_url":"https://search.dev.ndltd.org/etd/ohiolink/oai:etd.ohiolink.edu:case1346250505","repository":{"repo_id":"ohiolink","name":"OhioLINK","base_url":"https://etd.ohiolink.edu/acprod/odb_etd/ws/oai/oai"},"display":{"title":"ADVANCED HIGH STRENGTH STEEL THROUGH PARAEQUILIBRIUM CARBON PARTITIONING AND AUSTENITE STABILIZATION","abstract":"More than 30 vol. pct. retained austenite was obtained in quenched and partitioned (QP) 0.3C-4.0Mn steels subjected to dual stabilization heat treatments (DSHT). The temperature of the second quench in the DSHT process successfully played an essential role in the retained austenite contents at carbon partitioning temperatures above 450¿¿C. A thermodynamic model predicted the retained austenite contents in steels with different chemical compositions and heat treatment schedules. The microstructure and mechanical behavior of two heat-treated steels with the same level of retained austenite was studied. Optimum properties – tensile strength of 1600 MPa and 20% total elongation – were observed in a partially austenitized steel, indicating the benefits of intercritical annealing at the beginning of DSHT.","abstract_html":"More than 30 vol. pct. retained austenite was obtained in quenched and partitioned (QP) 0.3C-4.0Mn steels subjected to dual stabilization heat treatments (DSHT). The temperature of the second quench in the DSHT process successfully played an essential role in the retained austenite contents at carbon partitioning temperatures above 450¿¿C. A thermodynamic model predicted the retained austenite contents in steels with different chemical compositions and heat treatment schedules. The microstructure and mechanical behavior of two heat-treated steels with the same level of retained austenite was studied. Optimum properties – tensile strength of 1600 MPa and 20% total elongation – were observed in a partially austenitized steel, indicating the benefits of intercritical annealing at the beginning of DSHT.","abstract_has_math":false,"creators":["Qu, Hao"],"institution":"Case Western Reserve University School of Graduate Studies","degree_name":"Doctor of Philosophy","degree_level":"doctoral","degree_discipline":"Materials Science and Engineering","degree_department":null,"school":null,"contributors":["Heuer, Arthur"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2013,"date_issued":"2013-03-08","date_published":"2013-03-08","updated_at":"2026-07-24T03:35:52Z","subjects":["Engineering"],"languages":["English"],"rights":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. 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Optimum properties – tensile strength of 1600 MPa and 20% total elongation – were observed in a partially austenitized steel, indicating the benefits of intercritical annealing at the beginning of DSHT."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf","9.03 MB"]},{"key":"dc:title","label":"Title","values":["ADVANCED HIGH STRENGTH STEEL THROUGH PARAEQUILIBRIUM CARBON PARTITIONING AND AUSTENITE STABILIZATION"]}]}],"canonical_facts":{"dc:contributor":["Heuer, Arthur"],"dc:creator":["Qu, Hao"],"dc:date":["2013-03-08"],"dc:description":["More than 30 vol. pct. retained austenite was obtained in quenched and partitioned (QP) 0.3C-4.0Mn steels subjected to dual stabilization heat treatments (DSHT). The temperature of the second quench in the DSHT process successfully played an essential role in the retained austenite contents at carbon partitioning temperatures above 450¿¿C. A thermodynamic model predicted the retained austenite contents in steels with different chemical compositions and heat treatment schedules. The microstructure and mechanical behavior of two heat-treated steels with the same level of retained austenite was studied. Optimum properties – tensile strength of 1600 MPa and 20% total elongation – were observed in a partially austenitized steel, indicating the benefits of intercritical annealing at the beginning of DSHT."],"dc:format":["application/pdf","9.03 MB"],"dc:identifier":["http://rave.ohiolink.edu/etdc/view?acc_num=case1346250505"],"dc:language":["English"],"dc:publisher":["Case Western Reserve University School of Graduate Studies / OhioLINK"],"dc:rights":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. 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