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固定URL: https://doi.org/10.18910/9197

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論文情報

ファイル出力

タイトル
Simple Finite Element Model to Study Influence of Microstructure upon Ductility of Duplex High Strength Steel
著者
NRID
1000060166270 1000060166270
著者名
Murakawa, Hidekazu
NRID
1000020294134 1000020294134
ORCID
0000-0002-9890-7772 0000-0002-9890-7772
researchmap permalink
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Scopus Author ID
7101967093 7101967093
著者名
Serizawa, Hisashi
著者名
Katayama, Kazuaki
キーワード等
Finite Element Method
Martensite Transformation
Volumetric Change
Interface Element
Crack growth
抄録
In the development of superior high strength - high toughness welding steel materials, a balance between strength and toughness is necessary. A numerical study is carried out to clarify the influence of micro structure on strength and toughness and to establish a concept of strength - toughness balance. The effect of phase transformation, yielding behavior and crack growth on maximum strength of a plate with initial cracks is investigated. It is shown that expansion during phase transformation may increase brittle fracture strength. Two failure modes are distinguished, a plastic deformation dominant failure mode associated with low plastic strength, and a crack growth dominant failure mode associated with high plastic strength. A concept of strength toughness balance is proposed in which plastic strength and surface energy have values in the transition between these two failure modes where maximum joint strength is observed.
出版者
大阪大学接合科学研究所
オオサカ ダイガク セツゴウ カガク ケンキュウジョ
Joining and Welding Research Institute, Osaka University
収録物名
Transactions of JWRI
巻(号)
36(2)
ページ
67-71
刊行年月
2007-12
言語
英語
ハンドルURL
https://hdl.handle.net/11094/9197
DOI
https://doi.org/10.18910/9197
PISSN
03874508
NCID
AA00867058
アクセス権
open access
出版タイプ
Version of Record
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.36 No.2 (2007-12)