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Nb 첨가 철계 합금의 Prior austenite 결정립크기 측정 방법

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dc.contributor.author고광규-
dc.contributor.author배효주-
dc.contributor.author정신우-
dc.contributor.author성효경-
dc.contributor.author김정기-
dc.contributor.author설재복-
dc.date.accessioned2022-12-26T11:31:06Z-
dc.date.available2022-12-26T11:31:06Z-
dc.date.issued2021-
dc.identifier.issn2799-8525-
dc.identifier.urihttps://scholarworks.gnu.ac.kr/handle/sw.gnu/5155-
dc.description.abstractHigh-strength low-alloy (HSLA) steels show excellent toughness when trace amounts of transition elements are added. In steels, prior austenite grain size (PAGS), which is often determined by the number of added elements, is a critical factor in determining the mechanical properties of the material. In this study, we used two etching methods to measure and compare the PAGS of specimens with bainitic HSLA steels having different Nb contents These two methods were nital etching and picric acid etching. Both methods confirmed that the sample with high Nb content exhibited smaller PAGS than its low Nb counterpart because of Nb’s ability to hinder austenite recrystallization at high temperatures. Although both etching approaches are beneficial to PAGS estimation, the picric acid etching method has the advantage of enabling observation of the interface containing Nb precipitate. By contrast, the nital etching method has the advantage of a very short etching time (5 s) in determining the PAGS, with the picric acid etching method being considerably longer (5 h).-
dc.format.extent8-
dc.language한국어-
dc.language.isoKOR-
dc.publisher한국분말재료학회-
dc.titleNb 첨가 철계 합금의 Prior austenite 결정립크기 측정 방법-
dc.title.alternativeMeasurement Method of Prior Austenite Grain Size of Nb-added Fe-based Alloys-
dc.typeArticle-
dc.publisher.location대한민국-
dc.identifier.bibliographicCitation한국분말재료학회지, v.28, no.4, pp 317 - 324-
dc.citation.title한국분말재료학회지-
dc.citation.volume28-
dc.citation.number4-
dc.citation.startPage317-
dc.citation.endPage324-
dc.identifier.kciidART002751084-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClasskci-
dc.subject.keywordAuthorPrior austenite-
dc.subject.keywordAuthorGrain size-
dc.subject.keywordAuthorNb effect-
dc.subject.keywordAuthorPicric acid etching-
dc.subject.keywordAuthorNital etching-
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공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles

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