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In-Situ BrinellインデンテーションによるMg-Y単結晶の塑性変形挙動観察

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Title: In-Situ BrinellインデンテーションによるMg-Y単結晶の塑性変形挙動観察
Other Titles: Observation of Plastic Deformation Behavior of Mg-Y Alloy Single-Crystals by Using In-Situ Brinell Indentation
Authors: 峯田, 才寛1 Browse this author
三浦, 誠司2 Browse this author →KAKEN DB
岡, 和彦3 Browse this author
宮島, 達也4 Browse this author
Authors(alt): Mineta, Takahiro1
Miura, Seiji2
Oka, Kazuhiko3
Miyajima, Tatsuya4
Keywords: in-situ indentation
Brinell indentation
Issue Date: 1-Apr-2017
Publisher: 日本金属学会
Journal Title: 日本金属学会誌
Journal Title(alt): Journal of the Japan Institute of Metals
Volume: 81
Issue: 4
Start Page: 196
End Page: 205
Publisher DOI: 10.2320/jinstmet.JBW201601
Abstract: In order to understand a plastic deformation behavior of pure Mg and Mg-Y alloy single-crystals under a complex stress condition, newly established in-situ Brinell indentation was conducted. The deformation morphology on the upper surfaces of the specimen around the indent could not been sufficiently observed by the previously reported in-situ indentation methods using an optically transparent indenter due to refraction of rays at a surface of the indenter. In this study, the space between the indenter and the specimen surface are filled with immersion liquids such as silicone oil and kerosene. This technique enables to observe the specimen surface during indentation. Using in-situ Brinell indentation on pure Mg and Mg-Y alloy single-crystals, it is found that the shape of the indents on them are not circle but elliptic even during the loading. The aspect ratio of the indents decreases with increasing Y content. Moreover, occurrences of plastic deformation mechanisms around and beneath the indent could be observed during loading and unloading process by using the in-situ Brinell indentation method.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 三浦 誠司

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