疲労転位組織形成の臨界膜厚に関する離散転位動力学解析

• 嶋田 隆広

  京都大学大学院工学研究科

• 近藤 忠宏

  京都大学大学院工学研究科

• 北村 隆行

  京都大学大学院工学研究科

書誌事項

タイトル別名

• Critical Thickness for Formation of Fatigue Dislocation Structures: A Discrete Dislocation Dynamics Study

抄録

Formation of fatigue dislocation structure in copper thin films under cyclic loading was studied by the discrete dislocation dynamics (DDD) simulations, in which the motion of dislocation was restricted by the interfaces. The present DDD simulations successfully reproduced planar-arrayed dislocation walls in a persistent slip band (PSB) experimentally observed in copper bulk. In copper thin films with a several-micrometer thickness, the dislocation walls were stably formed by the cyclic loading, whereas they were unstable and could not be formed in the films thinner than 1 μm. This result indicates that there exists the critical thickness in the formation of fatigue dislocation structure.

収録刊行物

• 日本機械学会論文集Ａ編

  日本機械学会論文集Ａ編 78 (793), 1242-1249, 2012

  一般社団法人 日本機械学会

キーワード

• Dislocation Structures
• Fatigue
• Thin Films
• Critical Thickness
• Discrete Dislocation Dynamics

詳細情報

• CRID: 1390282679454215808
• NII論文ID: 130002050350
• DOI: 10.1299/kikaia.78.1242
• ISSN: 18848338
• ISSN: 03875008
• Web Site: https://www.jstage.jst.go.jp/article/kikaia/78/793/78_1242/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可