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タイトル: | Effects of vacancies on deformation behavior in nanocrystalline nickel |
著者: | Yuasa, Motohiro Matsumoto, Hiroshi Hakamada, Masataka https://orcid.org/0000-0002-8082-2148 (unconfirmed) Mabuchi, Mamoru https://orcid.org/0000-0002-0894-6306 (unconfirmed) |
著者名の別形: | 袴田, 昌高 馬渕, 守 |
キーワード: | nanocrystalline metal electrodeposition mechanical properties molecular dynamics simulation vacancy |
発行日: | 1-Oct-2008 |
出版者: | The Japan Institute of Metals and Materials |
誌名: | Materials Transactions |
巻: | 49 |
号: | 10 |
開始ページ: | 2315 |
終了ページ: | 2321 |
抄録: | The effects of vacancies on deformation of nanocrystalline Ni have been investigated by experiments and molecular dynamics (MD) simulations. In the experiments, nanocrystalline Ni specimens containing different numbers of vacancies were produced by electrodeposition and annealing, and their mechanical properties were investigated by tensile tests. As a result, the yield stress and fracture stress for the specimen containing more vacancies were lower than those for the one containing fewer vacancies. The MD simulations showed that the grain boundary energy is increased by the presence of vacancies in the grain boundary, however, that an increase in grain boundary energy with straining is reduced by the presence of vacancies in the grain boundary. The results of the experiments and simulations suggested that there is a correlation between the grain boundary energy characteristics and the mechanical properties of the nanocrystalline Ni. |
著作権等: | © 2008 The Japan Institute of Metals and Materials 発行元の許可を得て掲載しています。 |
URI: | http://hdl.handle.net/2433/262139 |
DOI(出版社版): | 10.2320/matertrans.MRA2008115 |
出現コレクション: | 学術雑誌掲載論文等 |
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