Effect of deep cryogenic treatment on structure-property relationship in an ultrahigh strength Mn-Si-Cr bainite/martensite multiphase rail steel
The bainite/martensite (B/M) multiphase microstructure was studied in 0.22C–2.0Mn–1.0Si–0.8Cr–0.8(Mo+Ni) (wt%) bainitic steel subjected to deep cryogenic treatment (DCT) to elucidate the positive effect of DCT on structure and mechanical properties. The study indicates that DCT can improve mechanica...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2017-01, Vol.684, p.559-566 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
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| creator | Wang, Kaikai Tan, Zhunli Gu, Kaixuan Gao, Bo Gao, Guhui Misra, R.D.K. Bai, Bingzhe |
| description | The bainite/martensite (B/M) multiphase microstructure was studied in 0.22C–2.0Mn–1.0Si–0.8Cr–0.8(Mo+Ni) (wt%) bainitic steel subjected to deep cryogenic treatment (DCT) to elucidate the positive effect of DCT on structure and mechanical properties. The study indicates that DCT can improve mechanical properties and wear resistance. It reduces the content of blocky martensite/austenite (M/A) constituents by eliminating unstable retained austenite (RA). At the same time, RA is relatively more enriched in carbon after DCT, compared to the tempering process. During DCT, the brittle martensite is also avoided, since the enhanced recovery reduces the carbon concentration during tempering. Meanwhile, the contraction of unit cell at low temperature promotes the precipitation of fine dispersed carbides and contributes to wear resistance. |
| doi_str_mv | 10.1016/j.msea.2016.12.100 |
| format | Article |
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The study indicates that DCT can improve mechanical properties and wear resistance. It reduces the content of blocky martensite/austenite (M/A) constituents by eliminating unstable retained austenite (RA). At the same time, RA is relatively more enriched in carbon after DCT, compared to the tempering process. During DCT, the brittle martensite is also avoided, since the enhanced recovery reduces the carbon concentration during tempering. Meanwhile, the contraction of unit cell at low temperature promotes the precipitation of fine dispersed carbides and contributes to wear resistance.</description><identifier>ISSN: 0921-5093</identifier><identifier>EISSN: 1873-4936</identifier><identifier>DOI: 10.1016/j.msea.2016.12.100</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Austenite ; Bainite ; Bainitic steel ; Cryogenic effects ; Cryogenic treatment ; Deep cryogenic treatment ; Low temperature physics ; Martensite ; Mechanical properties ; Microstructure ; Molybdenum ; Multiphase ; Nickel ; Precipitation ; Properties ; Rail steels ; Retained austenite ; Steel ; Structural steels ; Tempering ; Wear resistance</subject><ispartof>Materials science & engineering. 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A, Structural materials : properties, microstructure and processing</title><description>The bainite/martensite (B/M) multiphase microstructure was studied in 0.22C–2.0Mn–1.0Si–0.8Cr–0.8(Mo+Ni) (wt%) bainitic steel subjected to deep cryogenic treatment (DCT) to elucidate the positive effect of DCT on structure and mechanical properties. The study indicates that DCT can improve mechanical properties and wear resistance. It reduces the content of blocky martensite/austenite (M/A) constituents by eliminating unstable retained austenite (RA). At the same time, RA is relatively more enriched in carbon after DCT, compared to the tempering process. During DCT, the brittle martensite is also avoided, since the enhanced recovery reduces the carbon concentration during tempering. Meanwhile, the contraction of unit cell at low temperature promotes the precipitation of fine dispersed carbides and contributes to wear resistance.</description><subject>Austenite</subject><subject>Bainite</subject><subject>Bainitic steel</subject><subject>Cryogenic effects</subject><subject>Cryogenic treatment</subject><subject>Deep cryogenic treatment</subject><subject>Low temperature physics</subject><subject>Martensite</subject><subject>Mechanical properties</subject><subject>Microstructure</subject><subject>Molybdenum</subject><subject>Multiphase</subject><subject>Nickel</subject><subject>Precipitation</subject><subject>Properties</subject><subject>Rail steels</subject><subject>Retained austenite</subject><subject>Steel</subject><subject>Structural steels</subject><subject>Tempering</subject><subject>Wear resistance</subject><issn>0921-5093</issn><issn>1873-4936</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9UMtOwzAQtBBIlMIPcLLEOa1fSRuJC6rKQyriAJwtx9k0rlInrB2k_gWfjKty5rSj3ZndnSHklrMZZ7yY72b7AGYmEp5xkXrsjEz4ciEzVcrinExYKXiWs1JekqsQdowxrlg-IT_rpgEbad_QGmCgFg_9FryzNCKYuAefZp6GiKONI0I2YD8AxgNF6Ex0vQ-tG6jz1Hg6dhFN67btkQ9-G1v66rN3l62QVsZ5F2G-NxjBhwTpPvHd0JoAFI3rkgiguyYXjekC3PzVKfl8XH-snrPN29PL6mGTWVmqmHG1FLKwuVJ1ZfO8MMWyUNLUFVhbN2XFZFE1HEBWklshVJWb3BrLOG8KWYpcTsndaW8y9DVCiHrXj-jTSc1LJYValHyZWOLEstiHgNDoAV2ycNCc6WPyeqePyetj8pqL1GNJdH8SQfr_2wHqYB14C7XDlLWue_ef_BcMJpAk</recordid><startdate>20170127</startdate><enddate>20170127</enddate><creator>Wang, Kaikai</creator><creator>Tan, Zhunli</creator><creator>Gu, Kaixuan</creator><creator>Gao, Bo</creator><creator>Gao, Guhui</creator><creator>Misra, R.D.K.</creator><creator>Bai, Bingzhe</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20170127</creationdate><title>Effect of deep cryogenic treatment on structure-property relationship in an ultrahigh strength Mn-Si-Cr bainite/martensite multiphase rail steel</title><author>Wang, Kaikai ; Tan, Zhunli ; Gu, Kaixuan ; Gao, Bo ; Gao, Guhui ; Misra, R.D.K. ; Bai, Bingzhe</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c394t-148236c544dbc556a68643adbeccdf9b036bf1ee3b31c224b5a5cac011f639253</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Austenite</topic><topic>Bainite</topic><topic>Bainitic steel</topic><topic>Cryogenic effects</topic><topic>Cryogenic treatment</topic><topic>Deep cryogenic treatment</topic><topic>Low temperature physics</topic><topic>Martensite</topic><topic>Mechanical properties</topic><topic>Microstructure</topic><topic>Molybdenum</topic><topic>Multiphase</topic><topic>Nickel</topic><topic>Precipitation</topic><topic>Properties</topic><topic>Rail steels</topic><topic>Retained austenite</topic><topic>Steel</topic><topic>Structural steels</topic><topic>Tempering</topic><topic>Wear resistance</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Kaikai</creatorcontrib><creatorcontrib>Tan, Zhunli</creatorcontrib><creatorcontrib>Gu, Kaixuan</creatorcontrib><creatorcontrib>Gao, Bo</creatorcontrib><creatorcontrib>Gao, Guhui</creatorcontrib><creatorcontrib>Misra, R.D.K.</creatorcontrib><creatorcontrib>Bai, Bingzhe</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials science & engineering. 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A, Structural materials : properties, microstructure and processing</jtitle><date>2017-01-27</date><risdate>2017</risdate><volume>684</volume><spage>559</spage><epage>566</epage><pages>559-566</pages><issn>0921-5093</issn><eissn>1873-4936</eissn><abstract>The bainite/martensite (B/M) multiphase microstructure was studied in 0.22C–2.0Mn–1.0Si–0.8Cr–0.8(Mo+Ni) (wt%) bainitic steel subjected to deep cryogenic treatment (DCT) to elucidate the positive effect of DCT on structure and mechanical properties. The study indicates that DCT can improve mechanical properties and wear resistance. It reduces the content of blocky martensite/austenite (M/A) constituents by eliminating unstable retained austenite (RA). At the same time, RA is relatively more enriched in carbon after DCT, compared to the tempering process. During DCT, the brittle martensite is also avoided, since the enhanced recovery reduces the carbon concentration during tempering. Meanwhile, the contraction of unit cell at low temperature promotes the precipitation of fine dispersed carbides and contributes to wear resistance.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.msea.2016.12.100</doi><tpages>8</tpages></addata></record> |
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| subjects | Austenite Bainite Bainitic steel Cryogenic effects Cryogenic treatment Deep cryogenic treatment Low temperature physics Martensite Mechanical properties Microstructure Molybdenum Multiphase Nickel Precipitation Properties Rail steels Retained austenite Steel Structural steels Tempering Wear resistance |
| title | Effect of deep cryogenic treatment on structure-property relationship in an ultrahigh strength Mn-Si-Cr bainite/martensite multiphase rail steel |
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