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＜journal article＞
Statistical assessment of fatigue crack initiation from sub-surface hydrogen micropores in high-quality die-cast aluminum

Creator
Author PID
K004938
Creator Name
Toda, Hiroyuki
戸田, 裕之
トダ, ヒロユキ
Affiliation
Affiliation Name
Department of Mechanical Engineering, Toyohashi University of Technology
豊橋技術科学大学
Creator Name
Masuda, Shortaro
増田, 翔太郎
マスダ, ショウタロウ
Affiliation
Affiliation Name
Department of Mechanical Engineering, Toyohashi University of Technology
豊橋技術科学大学
Creator Name
Batres, Rafael
Affiliation
Affiliation Name
Department of Mechanical Engineering, Toyohashi University of Technology
Author PID
20378243
Creator Name
Kobayashi, Masakazu
小林, 正和
コバヤシ, マサカズ
Affiliation
Affiliation Name
Department of Mechanical Engineering, Toyohashi University of Technology
豊橋技術科学大学
Creator Name
Aoyama, Shunzo
青山, 俊三
アオヤマ, シュンゾウ
Affiliation
Affiliation Name
Engineering Department, Ahresty Co.
(株)アーレスティ
Creator Name
Onodera, Masato
小野寺, 真人
オノデラ, マサト
Affiliation
Affiliation Name
Engineering Department, Ahresty Co.
(株)アーレスティ
Creator Name
Furusawa, Ryosuke
古澤, 良介
フルサワ, リョウスケ
Affiliation
Affiliation Name
Engineering Department, Ahresty Co.
(株)アーレスティ
Creator Name
Uesugi, kentaro
上杉, 健太朗
ウエスギ, ケンタロウ
Affiliation
Affiliation Name
Japan Synchrotron Radiation Research Institute
高輝度光科学研究センター
Creator Name
Takeuchi, Akihisa
竹内, 晃久
タケウチ, アキヒサ
Affiliation
Affiliation Name
Japan Synchrotron Radiation Research Institute
高輝度光科学研究センター
Creator Name
Suzuki, Yoshio
鈴木, 芳生
スズキ, ヨシオ
Affiliation
Affiliation Name
Japan Synchrotron Radiation Research Institute
高輝度光科学研究センター
Language
English
Publisher
Elsevier
Date
2011-07-01
Source Title
Acta materialia
Vol
59
Issue
12
First Page
4990
Last Page
4998
Publication Type
Accepted Manuscript
Access Rights
open access
Related DOI
https://doi.org/10.1016/j.actamat.2011.04.049
Related URI
https://doi.org/10.1016/j.actamat.2011.04.049
Relation
https://doi.org/10.1016/j.actamat.2011.04.049
Abstract It has recently been discovered that micropores on the order of a few microns agglomerate in a high density in the sub-surface layer of aluminum alloys that have been produced in a high-quality die-ca...sting process. It is known that fatigue behavior is dominated by the existence of the micropores. In the present study, geometrical parameters defining the relationship between fatigue crack initiation and micropores have been investigated using high-resolution X-ray microtomography, combined with two kinds of statistical analysis. It has been revealed that consideration of micropore pairs is necessary, and a number of parameters for paired micropores that may be strongly associated with fatigue crack initiation have been extracted and statistically evaluated. It is concluded that the mean diameter between paired micropores, and the mean distance to the casting surface, are predominant in fatigue crack initiation.show more

Details

Record ID
1807806
Peer-Reviewed
Refereed
Subject Terms
X-ray tomography
Fatigue crack initiation
In situ observation
Pore
Al–Si alloy
ISSN
1359-6454
DOI
10.1016/j.actamat.2011.04.049
NCID
AA1106787X
Created Date 2017.05.29
Modified Date 2020.12.18