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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Phase-field simulation of rafting kinetics in a nickel-based single crystal superalloy

http://hdl.handle.net/2237/26782
cfccced0-bd8e-4537-a2ba-94cf11ff3ba5
名前 / ファイル ライセンス アクション
INTERMETALLICS_Revision_Final.pdf INTERMETALLICS_Revision_Final.pdf ファイル公開:2019/06/01 (4.2 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-07-07
タイトル
タイトル Phase-field simulation of rafting kinetics in a nickel-based single crystal superalloy
著者 Tsukada, Yuhki

× Tsukada, Yuhki

WEKO 72723

Tsukada, Yuhki

Search repository
Koyama, Toshiyuki

× Koyama, Toshiyuki

WEKO 72724

Koyama, Toshiyuki

Search repository
Kubota, Fuminori

× Kubota, Fuminori

WEKO 72725

Kubota, Fuminori

Search repository
Murata, Yoshinori

× Murata, Yoshinori

WEKO 72726

Murata, Yoshinori

Search repository
Kondo, Yoshihiro

× Kondo, Yoshihiro

WEKO 72727

Kondo, Yoshihiro

Search repository
権利
権利情報 © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
キーワード
主題Scheme Other
主題 Creep
キーワード
主題Scheme Other
主題 diffusion
キーワード
主題Scheme Other
主題 inhomogeneous deformation
キーワード
主題Scheme Other
主題 Microstructure
キーワード
主題Scheme Other
主題 Phase field modeling
キーワード
主題Scheme Other
主題 Aero-engine components
抄録
内容記述 Directional coarsening (rafting) of the γ′ precipitate phase during creep in a nickel-based single crystal superalloy is simulated using the phase-field method. Both the morphological change of the γ′ phase and the microstructure-dependent heterogeneous creep of the γ matrix phase are modeled in the simulation. In three-dimensional simulations considering a single γ′ particle at 1273 K under tensile stresses of 130 MPa and 100 MPa along the [001] crystallographic direction, the γ′ phase coarsens toward the direction perpendicular to the applied stress axis. The simulated macroscopic creep rate–time curve in the initial stage of creep is consistent with the experimental data. The time to rafting increases with decreasing magnitude of the applied external stress. Furthermore, the external stress is removed at an arbitrary strain in the simulation at 1273 K, and the occurrence of rafting during the subsequent heat treatment without external stress is confirmed. The simulation results show that the threshold value of macroscopic strain for inducing rafting (ɛth) is ɛth=0.12%–0.16% in the stress range of 100–160 MPa. Moreover, rafting can be accelerated by removing the external stress of 100–160 MPa when the macroscopic strain exceeds ɛth.
内容記述タイプ Abstract
出版者
出版者 Elsevier
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
ISSN
収録物識別子タイプ ISSN
収録物識別子 0966-9795
書誌情報 Intermetallics

巻 85, p. 187-196, 発行日 2017-06
著者版フラグ
値 author
URI
識別子 https://doi.org/10.1016/j.intermet.2017.02.017
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/26782
識別子タイプ HDL
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