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  1. 060 工学部
  2. 0601 学術論文

Fracture Toughness of an Advanced Ultrahigh-strength TRIP-aided Steel

http://hdl.handle.net/10091/00018769
443b31d3-c73a-49d1-bb70-9451456792ff
名前 / ファイル ライセンス アクション
Fracture_Toughness_Advanced_Ultrahigh-strength.pdf Fracture_Toughness_Advanced_Ultrahigh-strength.pdf (2.8 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2016-04-21
タイトル
言語 en
タイトル Fracture Toughness of an Advanced Ultrahigh-strength TRIP-aided Steel
言語
言語 eng
キーワード
主題Scheme Other
主題 fracture toughness
キーワード
主題Scheme Other
主題 ultrahigh-strength steel
キーワード
主題Scheme Other
主題 TRIP-aided steel
キーワード
主題Scheme Other
主題 microstructure
キーワード
主題Scheme Other
主題 retained austenite
キーワード
主題Scheme Other
主題 martensite
キーワード
主題Scheme Other
主題 bainitic ferrite
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Kobayashi, Junya

× Kobayashi, Junya

WEKO 50308

Kobayashi, Junya

Search repository
Ina, Daiki

× Ina, Daiki

WEKO 50309

Ina, Daiki

Search repository
Futamura, Asahiko

× Futamura, Asahiko

WEKO 50310

Futamura, Asahiko

Search repository
Sugimoto, Koh-ichi

× Sugimoto, Koh-ichi

WEKO 50311

Sugimoto, Koh-ichi

Search repository
信州大学研究者総覧へのリンク
氏名 Sugimoto, Koh-ichi
URL http://soar-rd.shinshu-u.ac.jp/profile/ja.jCApjekV.html
出版者
出版者 IRON STEEL INST JAPAN KEIDANREN KAIKAN
引用
内容記述タイプ Other
内容記述 ISIJ INTERNATIONAL. 54(4):955-962 (2014)
書誌情報 ISIJ INTERNATIONAL

巻 54, 号 4, p. 955-962, 発行日 2014-06-05
抄録
内容記述タイプ Abstract
内容記述 The fracture toughness of an advanced ultrahigh-strength 0.2%C-1.5%Si-1.5%Mn-1.0%Cr-0.05%Nb (in mass%) transformation-induced plasticity (TRIP)-aided steel with a bainitic ferrite and/or martensite structure matrix was investigated for applications in automobiles, construction machines, and pressure vessels. After the steel was austenitized and isothermally transformed via heat treatment at temperatures between 200 degrees C and 350 degrees C below the martensite-finish temperature, it exhibited a good combination of tensile strength (1.4 GPa) and total elongation (15%). In addition, the steel achieved a much higher plane-strain fracture toughness (K-IC = 129-154 MPa m(1/2)) than conventional structural steel such as SCM420 steel (K-IC = 57-63 MPa m(1/2)). Surprisingly, the fracture toughness was nearly the same as that of a maraging steel. Our results indicate that the high fracture toughness was associated with (1) a softened wide lath-martensite matrix with a low carbide content and carbon concentration and (2) effective plastic relaxation of localized stress concentration by the strain-induced transformation of fine metastable retained austenite in the narrow lath-martensite and retained austenite mixture, which suppresses void formation and cleavage crack initiation at the pre-crack tip.
資源タイプ(コンテンツの種類)
内容記述タイプ Other
内容記述 Article
ISSN
収録物識別子タイプ ISSN
収録物識別子 0915-1559
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA10680712
DOI
関連識別子
識別子タイプ DOI
関連識別子 https://doi.org/10.2355/isijinternational.54.955
関連名称
関連名称 10.2355/isijinternational.54.955
権利
権利情報 Copyright © 2014 ISIJ
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
WoS
表示名 Web of Science
URL http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000334824200032
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