Effect of Mn Depletion on Intra-granular Ferrite Transformation in Heat Affected Zone of Welding in Low Alloy Steel
Role of Mn depleted zone formed around MnS precipitate in austenite (γ) in transformation of Intra-Granular Ferrite (IGF) in low alloy steel subjected to simulated thermal cycle of weld Heat Affected Zone (HAZ) has been studied. Mn distribution in γ adjacent to MnS were examined by Field-Emission ty...
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| Veröffentlicht in: | Tetsu to hagane 2001/02/01, Vol.87(2), pp.93-100 |
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| container_title | Tetsu to hagane |
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| creator | SHIGESATO, Genichi SUGIYAMA, Masaaki AIHARA, Shuji UEMORI, Ryuji TOMITA, Yukio |
| description | Role of Mn depleted zone formed around MnS precipitate in austenite (γ) in transformation of Intra-Granular Ferrite (IGF) in low alloy steel subjected to simulated thermal cycle of weld Heat Affected Zone (HAZ) has been studied. Mn distribution in γ adjacent to MnS were examined by Field-Emission type Transmission Electron Microscopy (FE-TEM) with Energy Dispersive X-ray Spectroscopy (EDS). Foil samples for TEM observation were prepared using Focused Ion Beam (FIB) in order to prevent ununiformity of thinning rate of MnS and steel, and to thin the nucleation site of IGF specified by optical or scanning electron microscopic observations. The authors demonstrated the direct measurement of Mn depleted zone at IGF nucleation site. Mn depletion varied from 0 to 0.4 mass% depending on annealing temperature and holding time at γ phase region. Calculated concentration profiles of Mn near the depleted zone for various thermal cycles showed good agreement with experimental results. Change in area fraction of IGF with thermal cycle conditions was well explained by the extent of Mn depletion. It was concluded that formation of IGF was controlled mainly by the Mn depletion effect in low alloy steels. |
| doi_str_mv | 10.2355/tetsutohagane1955.87.2_93 |
| format | Article |
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Mn distribution in γ adjacent to MnS were examined by Field-Emission type Transmission Electron Microscopy (FE-TEM) with Energy Dispersive X-ray Spectroscopy (EDS). Foil samples for TEM observation were prepared using Focused Ion Beam (FIB) in order to prevent ununiformity of thinning rate of MnS and steel, and to thin the nucleation site of IGF specified by optical or scanning electron microscopic observations. The authors demonstrated the direct measurement of Mn depleted zone at IGF nucleation site. Mn depletion varied from 0 to 0.4 mass% depending on annealing temperature and holding time at γ phase region. Calculated concentration profiles of Mn near the depleted zone for various thermal cycles showed good agreement with experimental results. Change in area fraction of IGF with thermal cycle conditions was well explained by the extent of Mn depletion. It was concluded that formation of IGF was controlled mainly by the Mn depletion effect in low alloy steels.</description><identifier>ISSN: 0021-1575</identifier><identifier>EISSN: 1883-2954</identifier><identifier>DOI: 10.2355/tetsutohagane1955.87.2_93</identifier><identifier>CODEN: TEHAA2</identifier><language>eng ; jpn</language><publisher>Tokyo: The Iron and Steel Institute of Japan</publisher><subject>FE-TEM ; heat affected zone (HAZ) ; intra-granular ferrite (IGF) ; low alloy steel ; Mn depleted zone ; Mn depletion ; phase transformation ; toughness</subject><ispartof>Tetsu-to-Hagane, 2001/02/01, Vol.87(2), pp.93-100</ispartof><rights>The Iron and Steel Institute of Japan</rights><rights>2001 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c438t-7d4347d2187f4c47786b38bc7d9b274338fd243b81c40719a109191543a933a33</citedby><cites>FETCH-LOGICAL-c438t-7d4347d2187f4c47786b38bc7d9b274338fd243b81c40719a109191543a933a33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=933525$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>SHIGESATO, Genichi</creatorcontrib><creatorcontrib>SUGIYAMA, Masaaki</creatorcontrib><creatorcontrib>AIHARA, Shuji</creatorcontrib><creatorcontrib>UEMORI, Ryuji</creatorcontrib><creatorcontrib>TOMITA, Yukio</creatorcontrib><title>Effect of Mn Depletion on Intra-granular Ferrite Transformation in Heat Affected Zone of Welding in Low Alloy Steel</title><title>Tetsu to hagane</title><addtitle>Tetsu-to-Hagane</addtitle><description>Role of Mn depleted zone formed around MnS precipitate in austenite (γ) in transformation of Intra-Granular Ferrite (IGF) in low alloy steel subjected to simulated thermal cycle of weld Heat Affected Zone (HAZ) has been studied. Mn distribution in γ adjacent to MnS were examined by Field-Emission type Transmission Electron Microscopy (FE-TEM) with Energy Dispersive X-ray Spectroscopy (EDS). Foil samples for TEM observation were prepared using Focused Ion Beam (FIB) in order to prevent ununiformity of thinning rate of MnS and steel, and to thin the nucleation site of IGF specified by optical or scanning electron microscopic observations. The authors demonstrated the direct measurement of Mn depleted zone at IGF nucleation site. Mn depletion varied from 0 to 0.4 mass% depending on annealing temperature and holding time at γ phase region. Calculated concentration profiles of Mn near the depleted zone for various thermal cycles showed good agreement with experimental results. Change in area fraction of IGF with thermal cycle conditions was well explained by the extent of Mn depletion. It was concluded that formation of IGF was controlled mainly by the Mn depletion effect in low alloy steels.</description><subject>FE-TEM</subject><subject>heat affected zone (HAZ)</subject><subject>intra-granular ferrite (IGF)</subject><subject>low alloy steel</subject><subject>Mn depleted zone</subject><subject>Mn depletion</subject><subject>phase transformation</subject><subject>toughness</subject><issn>0021-1575</issn><issn>1883-2954</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNp1kF1rWyEYgGWssND1PzgGuzvZ8SvqZejatZDSi7YMdiMez2t6htFMDaX_fqYJuRkFQdTH54UHoS-kn1MmxPcKtexqerZrG4FoIeZKzqnR7AOaEaVYR7XgH9Gs7ynpiJDiE7ooZRramSu-kGyGypX34CpOHt9F_AO2AeqUIm7rNtZsu3W2cRdsxteQ81QBP7aL4lPe2DdwivgGbMXLNw-M-HeKsNf9gjBOcb0HVukFL0NIr_ihAoTP6MzbUODiuJ-jp-urx8ubbnX_8_ZyueocZ6p2cuSMy5ESJT13XEq1GJganBz1QCVnTPmRcjYo4ngvibak10QTwZnVjFnGztG3g3eb098dlGo2U3EQQquVdsXQhaSUad5AfQBdTqVk8Gabp43Nr4b0Zl_a_FfaKGn2pdvfr8chtjgbfKvjpnISNEJQ0ajVgfpTql3D6dnmOrkA7_mPQ06Ye7bZQGT_ALHinlE</recordid><startdate>20010201</startdate><enddate>20010201</enddate><creator>SHIGESATO, Genichi</creator><creator>SUGIYAMA, Masaaki</creator><creator>AIHARA, Shuji</creator><creator>UEMORI, Ryuji</creator><creator>TOMITA, Yukio</creator><general>The Iron and Steel Institute of Japan</general><general>Nippon Tekko Kyokai</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20010201</creationdate><title>Effect of Mn Depletion on Intra-granular Ferrite Transformation in Heat Affected Zone of Welding in Low Alloy Steel</title><author>SHIGESATO, Genichi ; SUGIYAMA, Masaaki ; AIHARA, Shuji ; UEMORI, Ryuji ; TOMITA, Yukio</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c438t-7d4347d2187f4c47786b38bc7d9b274338fd243b81c40719a109191543a933a33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng ; jpn</language><creationdate>2001</creationdate><topic>FE-TEM</topic><topic>heat affected zone (HAZ)</topic><topic>intra-granular ferrite (IGF)</topic><topic>low alloy steel</topic><topic>Mn depleted zone</topic><topic>Mn depletion</topic><topic>phase transformation</topic><topic>toughness</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>SHIGESATO, Genichi</creatorcontrib><creatorcontrib>SUGIYAMA, Masaaki</creatorcontrib><creatorcontrib>AIHARA, Shuji</creatorcontrib><creatorcontrib>UEMORI, Ryuji</creatorcontrib><creatorcontrib>TOMITA, Yukio</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Tetsu to hagane</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>SHIGESATO, Genichi</au><au>SUGIYAMA, Masaaki</au><au>AIHARA, Shuji</au><au>UEMORI, Ryuji</au><au>TOMITA, Yukio</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Mn Depletion on Intra-granular Ferrite Transformation in Heat Affected Zone of Welding in Low Alloy Steel</atitle><jtitle>Tetsu to hagane</jtitle><addtitle>Tetsu-to-Hagane</addtitle><date>2001-02-01</date><risdate>2001</risdate><volume>87</volume><issue>2</issue><spage>93</spage><epage>100</epage><pages>93-100</pages><issn>0021-1575</issn><eissn>1883-2954</eissn><coden>TEHAA2</coden><abstract>Role of Mn depleted zone formed around MnS precipitate in austenite (γ) in transformation of Intra-Granular Ferrite (IGF) in low alloy steel subjected to simulated thermal cycle of weld Heat Affected Zone (HAZ) has been studied. Mn distribution in γ adjacent to MnS were examined by Field-Emission type Transmission Electron Microscopy (FE-TEM) with Energy Dispersive X-ray Spectroscopy (EDS). Foil samples for TEM observation were prepared using Focused Ion Beam (FIB) in order to prevent ununiformity of thinning rate of MnS and steel, and to thin the nucleation site of IGF specified by optical or scanning electron microscopic observations. The authors demonstrated the direct measurement of Mn depleted zone at IGF nucleation site. Mn depletion varied from 0 to 0.4 mass% depending on annealing temperature and holding time at γ phase region. Calculated concentration profiles of Mn near the depleted zone for various thermal cycles showed good agreement with experimental results. Change in area fraction of IGF with thermal cycle conditions was well explained by the extent of Mn depletion. It was concluded that formation of IGF was controlled mainly by the Mn depletion effect in low alloy steels.</abstract><cop>Tokyo</cop><pub>The Iron and Steel Institute of Japan</pub><doi>10.2355/tetsutohagane1955.87.2_93</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Tetsu-to-Hagane, 2001/02/01, Vol.87(2), pp.93-100 |
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| language | eng ; jpn |
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| source | J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese; EZB-FREE-00999 freely available EZB journals |
| subjects | FE-TEM heat affected zone (HAZ) intra-granular ferrite (IGF) low alloy steel Mn depleted zone Mn depletion phase transformation toughness |
| title | Effect of Mn Depletion on Intra-granular Ferrite Transformation in Heat Affected Zone of Welding in Low Alloy Steel |
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