Optimum Chemical Composition and Thermomechanical Processing Condition for Niobium-Boron Steel
Effects of chemical composition and variables in thermomechanical processing (TMP) with accelerated cooling were studied on the mechanical properties and microstructure of Nb-B steel. It was clarified that, in order to achieve a good strength and toughness balance by a combined addition of niobium a...
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| Veröffentlicht in: | Transactions of the Iron and Steel Institute of Japan 1987, Vol.27(2), pp.130-138 |
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| container_end_page | 138 |
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| container_issue | 2 |
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| container_title | Transactions of the Iron and Steel Institute of Japan |
| container_volume | 27 |
| creator | TAMEHIRO, Hiroshi MURATA, Masahiko HABU, Ryuichi NAGUMO, Michihiko |
| description | Effects of chemical composition and variables in thermomechanical processing (TMP) with accelerated cooling were studied on the mechanical properties and microstructure of Nb-B steel. It was clarified that, in order to achieve a good strength and toughness balance by a combined addition of niobium and boron, it is necessary to reduce the carbon content, to dissolve niobium during slab-reheating and to roll with sufficient reduction in an unrecrystallization region of austenite. With these conditions, a fine-grained low-carbon bainitic structure is obtained. The changes in the mechanical properties and microstructure of Nb-B steel with composition and processing variables can be elucidated in terms of the distribution of boron and the amount of solute niobium of plates. The factors controlling strength and toughness of Nb-B steel were also discussed. |
| doi_str_mv | 10.2355/isijinternational1966.27.130 |
| format | Article |
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It was clarified that, in order to achieve a good strength and toughness balance by a combined addition of niobium and boron, it is necessary to reduce the carbon content, to dissolve niobium during slab-reheating and to roll with sufficient reduction in an unrecrystallization region of austenite. With these conditions, a fine-grained low-carbon bainitic structure is obtained. The changes in the mechanical properties and microstructure of Nb-B steel with composition and processing variables can be elucidated in terms of the distribution of boron and the amount of solute niobium of plates. The factors controlling strength and toughness of Nb-B steel were also discussed.</description><identifier>ISSN: 0021-1583</identifier><identifier>EISSN: 1881-1183</identifier><identifier>DOI: 10.2355/isijinternational1966.27.130</identifier><language>eng</language><publisher>Tokyo: The Iron and Steel Institute of Japan</publisher><subject>accelerated cooling ; Applied sciences ; bainite structure ; Condensed matter: structure, mechanical and thermal properties ; controlled rolling ; Cross-disciplinary physics: materials science; rheology ; Exact sciences and technology ; Forming ; Heat treatment ; high strength niobium-microalloyed steel ; Materials science ; Mechanical and acoustical properties of condensed matter ; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology ; Metals, semimetals and alloys ; Metals. Metallurgy ; microalloying of boron ; Physics ; Production techniques ; Rolling ; Specific materials ; strength ; Thermomechanical treatment ; toughuess</subject><ispartof>Transactions of the Iron and Steel Institute of Japan, 1987, Vol.27(2), pp.130-138</ispartof><rights>The Iron and Steel Institute of Japan</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c589t-18248a037a3af7a70d9e7286f8b8b62d23ea37083c25003d15716343d05a6dee3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,1877,4010,27900,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=8250732$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>TAMEHIRO, Hiroshi</creatorcontrib><creatorcontrib>MURATA, Masahiko</creatorcontrib><creatorcontrib>HABU, Ryuichi</creatorcontrib><creatorcontrib>NAGUMO, Michihiko</creatorcontrib><title>Optimum Chemical Composition and Thermomechanical Processing Condition for Niobium-Boron Steel</title><title>Transactions of the Iron and Steel Institute of Japan</title><addtitle>ISIJ Int.</addtitle><description>Effects of chemical composition and variables in thermomechanical processing (TMP) with accelerated cooling were studied on the mechanical properties and microstructure of Nb-B steel. It was clarified that, in order to achieve a good strength and toughness balance by a combined addition of niobium and boron, it is necessary to reduce the carbon content, to dissolve niobium during slab-reheating and to roll with sufficient reduction in an unrecrystallization region of austenite. With these conditions, a fine-grained low-carbon bainitic structure is obtained. The changes in the mechanical properties and microstructure of Nb-B steel with composition and processing variables can be elucidated in terms of the distribution of boron and the amount of solute niobium of plates. The factors controlling strength and toughness of Nb-B steel were also discussed.</description><subject>accelerated cooling</subject><subject>Applied sciences</subject><subject>bainite structure</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>controlled rolling</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Exact sciences and technology</subject><subject>Forming</subject><subject>Heat treatment</subject><subject>high strength niobium-microalloyed steel</subject><subject>Materials science</subject><subject>Mechanical and acoustical properties of condensed matter</subject><subject>Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology</subject><subject>Metals, semimetals and alloys</subject><subject>Metals. Metallurgy</subject><subject>microalloying of boron</subject><subject>Physics</subject><subject>Production techniques</subject><subject>Rolling</subject><subject>Specific materials</subject><subject>strength</subject><subject>Thermomechanical treatment</subject><subject>toughuess</subject><issn>0021-1583</issn><issn>1881-1183</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1987</creationdate><recordtype>article</recordtype><recordid>eNp1kMtOwzAURC0EEqXwD1l0m-JHHbsSG4h4SRUFUbZEt47TuortyE4X_D0uQV3Bxrauz8zoDkITgqeUcX5totkZ1-vgoDfeQUvmRTGlYkoYPkEjIiXJCZHsFI0wpunNJTtHFzHuMOZ4JukIfS673ti9zcqttkZBm5Xedj6ag2EGrs5WWx2st1ptwf0Ar8ErHaNxm8S6eiAbH7IX49dmb_M7H9Lkvde6vURnDbRRX_3eY_TxcL8qn_LF8vG5vF3kist5nxNJZxIwE8CgESBwPdeCyqKRa7kuaE2ZBiawZIpyjFlNuCAFm7EacyhqrdkY3Qy-KvgYg26qLhgL4asiuDp0Vf3ZVUVFlbpK8skg7yCmFZsATpl49JApVTCasLcB28UeNvr4D6E3qtX_Z9DhSFFHNtUZKu3YNzAwj0c</recordid><startdate>1987</startdate><enddate>1987</enddate><creator>TAMEHIRO, Hiroshi</creator><creator>MURATA, Masahiko</creator><creator>HABU, Ryuichi</creator><creator>NAGUMO, Michihiko</creator><general>The Iron and Steel Institute of Japan</general><general>Iron and steel institute of Japan</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>1987</creationdate><title>Optimum Chemical Composition and Thermomechanical Processing Condition for Niobium-Boron Steel</title><author>TAMEHIRO, Hiroshi ; MURATA, Masahiko ; HABU, Ryuichi ; NAGUMO, Michihiko</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c589t-18248a037a3af7a70d9e7286f8b8b62d23ea37083c25003d15716343d05a6dee3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1987</creationdate><topic>accelerated cooling</topic><topic>Applied sciences</topic><topic>bainite structure</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>controlled rolling</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Exact sciences and technology</topic><topic>Forming</topic><topic>Heat treatment</topic><topic>high strength niobium-microalloyed steel</topic><topic>Materials science</topic><topic>Mechanical and acoustical properties of condensed matter</topic><topic>Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology</topic><topic>Metals, semimetals and alloys</topic><topic>Metals. Metallurgy</topic><topic>microalloying of boron</topic><topic>Physics</topic><topic>Production techniques</topic><topic>Rolling</topic><topic>Specific materials</topic><topic>strength</topic><topic>Thermomechanical treatment</topic><topic>toughuess</topic><toplevel>online_resources</toplevel><creatorcontrib>TAMEHIRO, Hiroshi</creatorcontrib><creatorcontrib>MURATA, Masahiko</creatorcontrib><creatorcontrib>HABU, Ryuichi</creatorcontrib><creatorcontrib>NAGUMO, Michihiko</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Transactions of the Iron and Steel Institute of Japan</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>TAMEHIRO, Hiroshi</au><au>MURATA, Masahiko</au><au>HABU, Ryuichi</au><au>NAGUMO, Michihiko</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optimum Chemical Composition and Thermomechanical Processing Condition for Niobium-Boron Steel</atitle><jtitle>Transactions of the Iron and Steel Institute of Japan</jtitle><addtitle>ISIJ Int.</addtitle><date>1987</date><risdate>1987</risdate><volume>27</volume><issue>2</issue><spage>130</spage><epage>138</epage><pages>130-138</pages><issn>0021-1583</issn><eissn>1881-1183</eissn><abstract>Effects of chemical composition and variables in thermomechanical processing (TMP) with accelerated cooling were studied on the mechanical properties and microstructure of Nb-B steel. It was clarified that, in order to achieve a good strength and toughness balance by a combined addition of niobium and boron, it is necessary to reduce the carbon content, to dissolve niobium during slab-reheating and to roll with sufficient reduction in an unrecrystallization region of austenite. With these conditions, a fine-grained low-carbon bainitic structure is obtained. The changes in the mechanical properties and microstructure of Nb-B steel with composition and processing variables can be elucidated in terms of the distribution of boron and the amount of solute niobium of plates. The factors controlling strength and toughness of Nb-B steel were also discussed.</abstract><cop>Tokyo</cop><pub>The Iron and Steel Institute of Japan</pub><doi>10.2355/isijinternational1966.27.130</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0021-1583 |
| ispartof | Transactions of the Iron and Steel Institute of Japan, 1987, Vol.27(2), pp.130-138 |
| issn | 0021-1583 1881-1183 |
| language | eng |
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| source | J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese; EZB-FREE-00999 freely available EZB journals; Free Full-Text Journals in Chemistry |
| subjects | accelerated cooling Applied sciences bainite structure Condensed matter: structure, mechanical and thermal properties controlled rolling Cross-disciplinary physics: materials science rheology Exact sciences and technology Forming Heat treatment high strength niobium-microalloyed steel Materials science Mechanical and acoustical properties of condensed matter Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals, semimetals and alloys Metals. Metallurgy microalloying of boron Physics Production techniques Rolling Specific materials strength Thermomechanical treatment toughuess |
| title | Optimum Chemical Composition and Thermomechanical Processing Condition for Niobium-Boron Steel |
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