In-Situ Observation on the Formation Behavior of the Deformation Kink Bands in Zn Single Crystal and LPSO Phase

• Hagihara Koji

  Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University

• Honnami Masahito

  Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University

• Matsumoto Ryosuke

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

• Fukusumi Yoshihiro

  Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University

• Izuno Hitoshi

  Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University

• Yamasaki Michiaki

  Magnesium Research Center/Department of Materials Science, Kumamoto University

• Okamoto Takuya

  Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University

• Nakano Takayoshi

  Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University

• Kawamura Yoshihito

  Magnesium Research Center/Department of Materials Science, Kumamoto University

Abstract

The deformation microstructure and deformation process of the Mg-based long period stacking ordered (LPSO) phase accompanied by the formation of deformation kink bands were examined through dynamical observations during compression tests, and the features were compared to those in Zn single crystals. In both crystals, the formation of deformation kink bands was confirmed in specimens compressed along the direction parallel to the basal plane. The deformation kink bands formed in the directionally solidified (DS) LPSO phase crystals and the Zn single crystals had similar morphologies. Their formation induced plastic strain almost along the c-axis. However, their formation behaviors showed some different features. In the LPSO phase DS crystal, two different migration behaviors of the deformation kink band boundaries existed. The slower migration process was comparable to that observed in Zn single crystals. However, a migration process more than 10⁵ times faster than the slower process was also monitored. The results imply that two different formation mechanisms of the deformation kink band might exist in the LPSO phase crystal.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 56 (7), 943-951, 2015

  The Japan Institute of Metals and Materials

Keywords

• long period stacking ordered (LPSO) phase
• deformation kink band
• dynamical observation

Details

• CRID: 1390282679230272256
• NII Article ID: 130005083571
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.mh201412
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 026564412
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026564412
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/56/7/56_MH201412/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed