Micro-Kinking of the Long-Period Stacking/Order (LPSO) Phase in a Hot-Extruded Mg₉₇Zn₁Y₂ Alloy (Special Issue on Long-Period Stacking Ordered Structure and Its Related Materials(1)) Micro-Kinking of the Long-Period Stacking/Order (LPSO) Phase in a Hot-Extruded Mg_<97>Zn_1Y_2 Alloy

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Abstract

Microstructures of a hot-extruded Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> alloy containing the long-period stacking/order (LPSO) phase have been investigated by transmission electron microscopy (TEM), particularly focusing on kink-deformed LPSO crystals. It is found that kink-deformation in the LPSO phase grains are mostly characterized by singular straight interfaces across which the host crystals are sharply bended, as being similar to those reported previously. In addition to these common LPSO phase kink-bands, we occasionally find unique microscopic traces at the kink-boundaries, which are composed of multiply segmented kink-interfaces that are sequentially rotated with small angles in a same direction, accomplishing a macroscopic large crystalline bend; i.e., a micro-kinking feature. Occurrence of such micro-kinking may hardly be explained by generation of dipole-pair dislocations in the early stage of kinking, which have been successfully used for phenomenological understanding of kink deformation.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 54(5), 698-702, 2013-05-01

    The Japan Institute of Metals and Materials

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  • Plastic Deformation Behavior of Mg_<12>ZnY LPSO-Phase with 14H-Typed Structure

    HAGIHARA K. , SUGINO Y. , FUKUSUMI Y. , UMAKOSHI Y. , NAKANO T.

    MATERIALS TRANSACTIONS 52(6), 1096-1103, 2011-06-10

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Codes

  • NII Article ID (NAID)
    10031168413
  • NII NACSIS-CAT ID (NCID)
    AA1151294X
  • Text Lang
    ENG
  • Article Type
    REV
  • ISSN
    13459678
  • NDL Article ID
    024456538
  • NDL Call No.
    Z53-J286
  • Data Source
    CJP  NDL  J-STAGE 
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