Deformation behaviour of 18R long-period stacking ordered structure in an Mg-Zn-Y alloy under shock loading

Fan Zhang, Yu Ren, Shoucong Ning, Yuan Tian, Weiwei Hu, Chengwen Tan, Takeshi Fujita, Akihiko Hirata, Mingwei Chen

研究成果: Article

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The deformation microstructure of an interdendritic18 R long-period stacking ordered (LPSO) phase in an Mg-Zn-Y alloy subjected to shock loading was investigated by transmission electron microscopy. It was found that kink banding, the key deformation mode of LPSO phases under quasi-static loading, is suppressed by shock loading. Instead, second-order pyramidal slip by <c+a> dislocations, which has not been observed in LPSO before, contributes to the plastic deformation of LPSO, in addition to the <a> dislocations. The rate-dependent deformation modes of LPSO have an important implication in understanding the mechanical behaviour of LPSO strengthened Mg alloys under extreme loading conditions.

元の言語English
ページ(範囲)21-25
ページ数5
ジャーナルIntermetallics
102
DOI
出版物ステータスPublished - 2018 11

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ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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