{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1390282680159542016.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.2355/tetsutohagane1955.86.6_402"}},{"identifier":{"@type":"NDL_BIB_ID","@value":"5348022"}},{"identifier":{"@type":"URI","@value":"http://id.ndl.go.jp/bib/5348022"}},{"identifier":{"@type":"URI","@value":"https://ndlsearch.ndl.go.jp/books/R000000004-I5348022"}},{"identifier":{"@type":"URI","@value":"https://www.jstage.jst.go.jp/article/tetsutohagane1955/86/6/86_6_402/_pdf"}},{"identifier":{"@type":"NAID","@value":"110001457209"}}],"dc:title":[{"@language":"ja","@value":"大歪変形下での構造用鋼の低サイクル疲労特性に及ぼすミクロ組織の影響"},{"@language":"en","@value":"Effect of Microstructure on Low-cycle Fatigue Property of Structural Steels under Large Plastic Deformation"},{"@language":"ja-Kana","@value":"ダイワイ ヘンケイ カ デ ノ コウゾウヨウ コウ ノ テイサイクル ヒロウ トクセイ ニ オヨボス ミクロ ソシキ ノ エイキョウ"}],"description":[{"type":"abstract","notation":[{"@language":"en","@value":"Low-cycle fatigue behavior of the structural steels under large plastic strain was investigated using notched round specimens. Crack growth rates show good correlation with the value of effective <I>J</I>-integral range, Δ<I>J</I><SUB>eff</SUB>. Crack growth rates are strongly affected by microstructure of the steels. It was shown that steels with higher pearlite volume fraction have lower crack growth rate. Many voids were observed around crack tip in the steel with higher pearlite volume fraction, which shows that the void growth and coalescence mechanism is dominant in this type of steels and crack growth were suppressed by branching and curving of the crack. On the other hand, in the steel with lower pearlite volume fraction, voids were hardly formed near crack tip region and crack propagates by plastic blunting and re-shaping mechanism, keeping the crack shape strait. Fatigue failure life were affected by MnS inclusion content. Large amount of void nucleation and growth were observed in the inner region of the specimen of the steel with large MnS content during cyclic loading, and final failure was occurred with a very short crack extension. It can be said that final toughness is improved by reducing MnS inclusion content and pearlite volume fraction, which can prevent void nucleation and growth in the inner region during cyclic loading."}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420282801181322624","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"00029191"},{"@type":"NRID","@value":"1000000029191"},{"@type":"NRID","@value":"9000283460968"},{"@type":"NRID","@value":"9000257815092"},{"@type":"NRID","@value":"9000257814753"},{"@type":"NRID","@value":"9000257815116"},{"@type":"NRID","@value":"9000257815113"},{"@type":"NRID","@value":"9000020322252"},{"@type":"NRID","@value":"9000254660515"},{"@type":"NRID","@value":"9000257815089"},{"@type":"NRID","@value":"9000257814757"},{"@type":"NRID","@value":"9000257815315"},{"@type":"NRID","@value":"9000257814554"},{"@type":"NRID","@value":"9000398112662"},{"@type":"NRID","@value":"9000254665256"},{"@type":"NRID","@value":"9000257814718"},{"@type":"NRID","@value":"9000257814722"},{"@type":"NRID","@value":"9000257814738"},{"@type":"NRID","@value":"9000254666448"},{"@type":"NRID","@value":"9000257814948"},{"@type":"NRID","@value":"9000005062026"},{"@type":"NRID","@value":"9000254664143"},{"@type":"NRID","@value":"9000257815133"},{"@type":"NRID","@value":"9000257814953"},{"@type":"NRID","@value":"9000257814842"},{"@type":"NRID","@value":"9000254205687"},{"@type":"NRID","@value":"9000365001475"},{"@type":"NRID","@value":"9000398116424"},{"@type":"NRID","@value":"9000365001547"},{"@type":"NRID","@value":"9000365001196"},{"@type":"NRID","@value":"9000365001908"},{"@type":"NRID","@value":"9000365001843"},{"@type":"NRID","@value":"9000365001782"},{"@type":"NRID","@value":"9000365002044"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/read0014046"}],"foaf:name":[{"@language":"ja","@value":"豊田 政男"},{"@language":"en","@value":"TOYODA Masao"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Graduate School of Engineering, Osaka University"},{"@language":"ja","@value":"大阪大学大学院工学研究科"}]},{"@id":"https://cir.nii.ac.jp/crid/1410001205928820608","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000002965721"}],"foaf:name":[{"@language":"ja","@value":"栗原 正好"},{"@language":"en","@value":"KURIHARA Masayoshi"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Materials & Processing Research Center, NKK Corp."},{"@language":"ja","@value":"NKK総合材料技術研究所"}]},{"@id":"https://cir.nii.ac.jp/crid/1410282680159542018","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000002965720"}],"foaf:name":[{"@language":"ja","@value":"石川 信行"},{"@language":"en","@value":"ISHIKAWA Nobuyuki"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Materials & Processing Research Center, NKK Corp., now Massachusetts Institute of Technology"},{"@language":"ja","@value":"NKK総合材料技術研究所(現:マサチューセッツ工科大学)"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00211575"},{"@type":"LISSN","@value":"00211575"},{"@type":"EISSN","@value":"18832954"},{"@type":"NDL_BIB_ID","@value":"000000015659"},{"@type":"ISSN","@value":"00211575"},{"@type":"NCID","@value":"AN00151251"}],"prism:publicationName":[{"@language":"en","@value":"Tetsu-to-Hagane"},{"@language":"ja","@value":"鉄と鋼"},{"@language":"en","@value":"Tetsu-to-Hagane"},{"@language":"en","@value":"Journal of the Iron and Steel Institute of Japan"},{"@language":"ja","@value":"鉄と鋼"}],"dc:publisher":[{"@language":"en","@value":"The Iron and Steel Institute of Japan"},{"@language":"ja","@value":"一般社団法人 日本鉄鋼協会"}],"prism:publicationDate":"2000","prism:volume":"86","prism:number":"6","prism:startingPage":"402","prism:endingPage":"408"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","url":[{"@id":"http://id.ndl.go.jp/bib/5348022"},{"@id":"https://ndlsearch.ndl.go.jp/books/R000000004-I5348022"},{"@id":"https://www.jstage.jst.go.jp/article/tetsutohagane1955/86/6/86_6_402/_pdf"}],"availableAt":"2000","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=structural%20steel","dc:title":"structural steel"},{"@id":"https://cir.nii.ac.jp/all?q=low-cycle%20fatigue","dc:title":"low-cycle fatigue"},{"@id":"https://cir.nii.ac.jp/all?q=large%20plastic%20strain","dc:title":"large plastic strain"},{"@id":"https://cir.nii.ac.jp/all?q=J-integral%20range","dc:title":"J-integral range"},{"@id":"https://cir.nii.ac.jp/all?q=crack%20propagation","dc:title":"crack propagation"},{"@id":"https://cir.nii.ac.jp/all?q=void%20nucleation","dc:title":"void nucleation"},{"@id":"https://cir.nii.ac.jp/all?q=void%20growth","dc:title":"void growth"},{"@id":"https://cir.nii.ac.jp/all?q=MnS%20inclusion","dc:title":"MnS inclusion"}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360574095375231360","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"On the ductile enlargement of voids in triaxial stress fields∗"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855571253527296","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Some Further Results of J-Integral Analysis and Estimates"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418520081328000","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Closure Behavior of Small Cracks Under High Strain Fatigue Histories"}]},{"@id":"https://cir.nii.ac.jp/crid/1362544420396860544","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Crack Growth During Low-Cycle Fatigue of Smooth Axial 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