Dissolution and precipitation behaviour in steels microalloyed with niobium during thermomechanical processing
[Display omitted] The thermomechanical processing of high strength low allow (HSLA) steels during low-temperature roughing, followed by rapid reheating to higher temperatures was investigated to better understand the Nb dissolution kinetics in austenite, and the subsequent precipitation behaviour du...
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| Veröffentlicht in: | Acta materialia 2015-09, Vol.97, p.392-403 |
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| creator | Gong, P. Palmiere, E.J. Rainforth, W.M. |
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The thermomechanical processing of high strength low allow (HSLA) steels during low-temperature roughing, followed by rapid reheating to higher temperatures was investigated to better understand the Nb dissolution kinetics in austenite, and the subsequent precipitation behaviour during the final finishing passes. For comparative purposes, two experimental 0.06wt% C steels were studied, one containing 0.03wt% Nb (Nb steel), and the second containing both 0.03wt% Nb and 0.02wt% Ti (Nb–Ti steel). Processing of these steels consisted of a simulated roughing schedule, with the final roughing pass taking place at 850°C. The strain-induced precipitation intensity in the steels subsequently quenched where characterised using transmission electron microscopy. Following this, the steels were rapidly reheated at a rate of 10°C/s to a temperature of 1200°C, held at temperature for various times, and water quenched to room temperature so that both the precipitate dissolution kinetics, together with the austenite grain coarsening kinetics could be established. |
| doi_str_mv | 10.1016/j.actamat.2015.06.057 |
| format | Article |
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The thermomechanical processing of high strength low allow (HSLA) steels during low-temperature roughing, followed by rapid reheating to higher temperatures was investigated to better understand the Nb dissolution kinetics in austenite, and the subsequent precipitation behaviour during the final finishing passes. For comparative purposes, two experimental 0.06wt% C steels were studied, one containing 0.03wt% Nb (Nb steel), and the second containing both 0.03wt% Nb and 0.02wt% Ti (Nb–Ti steel). Processing of these steels consisted of a simulated roughing schedule, with the final roughing pass taking place at 850°C. The strain-induced precipitation intensity in the steels subsequently quenched where characterised using transmission electron microscopy. Following this, the steels were rapidly reheated at a rate of 10°C/s to a temperature of 1200°C, held at temperature for various times, and water quenched to room temperature so that both the precipitate dissolution kinetics, together with the austenite grain coarsening kinetics could be established.</description><identifier>ISSN: 1359-6454</identifier><identifier>EISSN: 1873-2453</identifier><identifier>DOI: 10.1016/j.actamat.2015.06.057</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Austenite ; Austenite grain growth ; Dissolution ; Microalloyed steel ; Niobium ; Precipitate dissolution kinetics ; Precipitation ; Quenching (cooling) ; Roughing ; Steels ; Strain-induced precipitation ; Thermomechanical processing ; Thermomechanical treatment</subject><ispartof>Acta materialia, 2015-09, Vol.97, p.392-403</ispartof><rights>2015 Acta Materialia Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c342t-2ece67ec380aafe64f18d8862aa40616b0078f63e67e48dce904292bfa5ef3333</citedby><cites>FETCH-LOGICAL-c342t-2ece67ec380aafe64f18d8862aa40616b0078f63e67e48dce904292bfa5ef3333</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.actamat.2015.06.057$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Gong, P.</creatorcontrib><creatorcontrib>Palmiere, E.J.</creatorcontrib><creatorcontrib>Rainforth, W.M.</creatorcontrib><title>Dissolution and precipitation behaviour in steels microalloyed with niobium during thermomechanical processing</title><title>Acta materialia</title><description>[Display omitted]
The thermomechanical processing of high strength low allow (HSLA) steels during low-temperature roughing, followed by rapid reheating to higher temperatures was investigated to better understand the Nb dissolution kinetics in austenite, and the subsequent precipitation behaviour during the final finishing passes. For comparative purposes, two experimental 0.06wt% C steels were studied, one containing 0.03wt% Nb (Nb steel), and the second containing both 0.03wt% Nb and 0.02wt% Ti (Nb–Ti steel). Processing of these steels consisted of a simulated roughing schedule, with the final roughing pass taking place at 850°C. The strain-induced precipitation intensity in the steels subsequently quenched where characterised using transmission electron microscopy. Following this, the steels were rapidly reheated at a rate of 10°C/s to a temperature of 1200°C, held at temperature for various times, and water quenched to room temperature so that both the precipitate dissolution kinetics, together with the austenite grain coarsening kinetics could be established.</description><subject>Austenite</subject><subject>Austenite grain growth</subject><subject>Dissolution</subject><subject>Microalloyed steel</subject><subject>Niobium</subject><subject>Precipitate dissolution kinetics</subject><subject>Precipitation</subject><subject>Quenching (cooling)</subject><subject>Roughing</subject><subject>Steels</subject><subject>Strain-induced precipitation</subject><subject>Thermomechanical processing</subject><subject>Thermomechanical treatment</subject><issn>1359-6454</issn><issn>1873-2453</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqFkMtOxDAMRSsEEs9PQMqSTUvSJmlnhRBvCYkNrCNP6jIetcmQpCD-ngzDHm9s2dfX8imKc8ErwYW-XFdgE0yQqpoLVXFdcdXuFUeia5uylqrZz3WjFqWWSh4WxzGuORd1K_lR4W4pRj_Oibxj4Hq2CWhpQwl-O0tcwSf5OTByLCbEMbKJbPAwjv4be_ZFacUc-SXNE-vnQO6dpRWGyU9oV-DIwpg9vcUY8-y0OBhgjHj2l0-Kt_u715vH8vnl4enm-rm0jaxTWaNF3aJtOg4woJaD6Pqu0zWA5FroJedtN-hmK5Jdb3HBZb2olwMoHJocJ8XFzjef_pgxJjNRtDiO4NDP0YhWdAsl21ZlqdpJ81cxBhzMJtAE4dsIbrZ8zdr88TVbvoZrk_nmvavdXmaCn4TBREvoLPaUESbTe_rH4QeJeYol</recordid><startdate>20150915</startdate><enddate>20150915</enddate><creator>Gong, P.</creator><creator>Palmiere, E.J.</creator><creator>Rainforth, W.M.</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20150915</creationdate><title>Dissolution and precipitation behaviour in steels microalloyed with niobium during thermomechanical processing</title><author>Gong, P. ; Palmiere, E.J. ; Rainforth, W.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c342t-2ece67ec380aafe64f18d8862aa40616b0078f63e67e48dce904292bfa5ef3333</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Austenite</topic><topic>Austenite grain growth</topic><topic>Dissolution</topic><topic>Microalloyed steel</topic><topic>Niobium</topic><topic>Precipitate dissolution kinetics</topic><topic>Precipitation</topic><topic>Quenching (cooling)</topic><topic>Roughing</topic><topic>Steels</topic><topic>Strain-induced precipitation</topic><topic>Thermomechanical processing</topic><topic>Thermomechanical treatment</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gong, P.</creatorcontrib><creatorcontrib>Palmiere, E.J.</creatorcontrib><creatorcontrib>Rainforth, W.M.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Acta materialia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gong, P.</au><au>Palmiere, E.J.</au><au>Rainforth, W.M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dissolution and precipitation behaviour in steels microalloyed with niobium during thermomechanical processing</atitle><jtitle>Acta materialia</jtitle><date>2015-09-15</date><risdate>2015</risdate><volume>97</volume><spage>392</spage><epage>403</epage><pages>392-403</pages><issn>1359-6454</issn><eissn>1873-2453</eissn><abstract>[Display omitted]
The thermomechanical processing of high strength low allow (HSLA) steels during low-temperature roughing, followed by rapid reheating to higher temperatures was investigated to better understand the Nb dissolution kinetics in austenite, and the subsequent precipitation behaviour during the final finishing passes. For comparative purposes, two experimental 0.06wt% C steels were studied, one containing 0.03wt% Nb (Nb steel), and the second containing both 0.03wt% Nb and 0.02wt% Ti (Nb–Ti steel). Processing of these steels consisted of a simulated roughing schedule, with the final roughing pass taking place at 850°C. The strain-induced precipitation intensity in the steels subsequently quenched where characterised using transmission electron microscopy. Following this, the steels were rapidly reheated at a rate of 10°C/s to a temperature of 1200°C, held at temperature for various times, and water quenched to room temperature so that both the precipitate dissolution kinetics, together with the austenite grain coarsening kinetics could be established.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.actamat.2015.06.057</doi><tpages>12</tpages></addata></record> |
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| subjects | Austenite Austenite grain growth Dissolution Microalloyed steel Niobium Precipitate dissolution kinetics Precipitation Quenching (cooling) Roughing Steels Strain-induced precipitation Thermomechanical processing Thermomechanical treatment |
| title | Dissolution and precipitation behaviour in steels microalloyed with niobium during thermomechanical processing |
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