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  1. 学術雑誌掲載済論文
  2. 洋雑誌

Investigation of strain redistribution mechanism in α titanium by image-based crystal plasticity analysis

https://kitami-it.repo.nii.ac.jp/records/8732
3b18c035-36d9-4aba-9c9c-36dffa92534b
名前 / ファイル ライセンス アクション
05-2019-EPJB.pdf 05-2019-EPJB (2.3 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2020-10-01
タイトル
言語 en
タイトル Investigation of strain redistribution mechanism in α titanium by image-based crystal plasticity analysis
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
著者 Kawano, Yoshiki

× Kawano, Yoshiki

WEKO 90173

en Kawano, Yoshiki

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Ohashi, Tetsuya

× Ohashi, Tetsuya

WEKO 90174

en Ohashi, Tetsuya

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Mayama, Tsuyoshi

× Mayama, Tsuyoshi

WEKO 90175

en Mayama, Tsuyoshi

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Tanaka, Masaki

× Tanaka, Masaki

WEKO 90176

en Tanaka, Masaki

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Okuyama, Yelm

× Okuyama, Yelm

WEKO 90177

en Okuyama, Yelm

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Sato, Michihiro

× Sato, Michihiro

WEKO 90178

en Sato, Michihiro

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著者別名
姓名
姓名 河野, 義樹
言語 ja
著者別名
姓名
姓名 大橋, 鉄也
言語 ja
抄録
内容記述タイプ Abstract
内容記述 Mechanisms of strain localization and localized activation of slip systems in α titanium were investigated using a crystal plasticity finite element (CPFE) method. A microscopic image of polycrystalline α titanium was obtained by electron back scatter diffraction (EBSD), and the data was converted from the microscopic image into the geometric model for the CPFE analysis. The uniaxial tensile deformation of the model was numerically reproduced by the CPFE method employing a dislocation density based constitutive equation. The results showed that the strain distribution corresponds well with that obtained by the experiment when the ratio of critical resolved shear stress (CRSS) employed in the numerical simulation is basal:prismatic ⟨a⟩:1st-pyramidal ⟨a⟩:1st-pyramidal ⟨c + a⟩:2nd-pyramidal ⟨c + a⟩ = 1.0:1.0:1.3:2.0:2.0. Next, numerical simulations were performed by changing the ratio of CRSS among the slip systems but keeping all other conditions the same as those of the above uniaxial tensile analysis. The results showed that strain redistribution typically occurs between hard and soft regions with high and low CRSSs for the primary slip systems; this redistribution resulted in a localized higher strain and activation of slip systems. However, localized activation of slip systems was observed even in slip systems with higher CRSS; the mechanism could be explained by the strain redistribution in the tensile direction.
言語 en
書誌情報 en : The European Physical Journal B

巻 92, 号 9, 発行日 2019-09
ISSN
収録物識別子タイプ PISSN
収録物識別子 1434-6028
DOI
関連識別子
識別子タイプ DOI
関連識別子 https://doi.org/10.1140/epjb/e2019-100238-3
著者版フラグ
値 author
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
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