Activation Free Energy of Nucleation of a Dislocation Pair in Magnesium

• Uranagase Masayuki

  Department of Mechanical Engineering and Science, Graduate School of Engineering, Kyoto University

• Kamigaki Sana

  Department of Mechanical Engineering and Science, Graduate School of Engineering, Kyoto University

• Matsumoto Ryosuke

  Department of Mechanical Engineering and Science, Graduate School of Engineering, Kyoto University

• Miyazaki Noriyuki

  Department of Mechanical Engineering and Science, Graduate School of Engineering, Kyoto University

抄録

Kink deformation is one of the possible principal deformation modes of alloys with a long-period stacking ordered structure under compression parallel to the basal plane. In this deformation, dislocation pairs are massively nucleated, and these dislocations align in a line to form kink bands. In this study, we investigated the nucleation of a dislocation pair in a pure magnesium single crystal by molecular dynamics simulations. We also evaluated the activation free energy of nucleation of a dislocation pair and investigated the dependence of the activation free energy on the applied shear stress and temperature.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 54 (5), 680-685, 2013

  公益社団法人 日本金属学会

キーワード

• molecular dynamics simulation
• metadynamics method
• activation free energy
• dislocation nucleation
• magnesium

詳細情報

• CRID: 1390001204249279872
• NII論文ID: 10031168410
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.mi201213
• COI: 1:CAS:528:DC%2BC3sXhtFChs7jN
• ISSN: 13475320
• ISSN: 13459678
• HANDLE: 2433/194078
• NDL書誌ID: 024456411
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I024456411
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/54/5/54_MI201213/_pdf
• 本文言語コード: en
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