Grain Boundary Structure of Ultrafine Grained Pure Copper Fabricated by Accumulative Roll Bonding

Access this Article

Search this Article

Author(s)

    • Yamada Kousuke YAMADA Kousuke
    • Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
    • YOSHIDA Fuyuki
    • Department of Electrical and Materials Science, Faculty of Engineering Sciences, Kyushu University
    • NAKASHIMA Hideharu
    • Department of Electrical and Materials Science, Faculty of Engineering Sciences, Kyushu University
    • TSUJI Nobuhiro
    • Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University

Abstract

Grain boundary structures of ultrafine grained pure copper (Cu) fabricated by the accumulative roll bonding (ARB) have been studied. The atomic structures of grain boundaries in the ARB processed Cu (ARB-Cu) were observed by high resolution electron microscopy. In order to compare the grain boundaries in the ARB-Cu with equilibrium grain boundaries, the grain boundary energy and structure of symmetric tilt boundaries with ⟨110⟩ common axis in pure Cu were computed by molecular dynamics simulation (MD). The low angle boundaries in the ARB-Cu were basically described by conventional dislocation model and simultaneously there were some local structures having certainly high energy configurations. The grain boundaries with large misorientation in the ARB-Cu are basically described by the structural units predicted for the normal grain boundaries by MD. The present results indicate that the atomic structures of the boundaries in the Cu severely deformed by the ARB are rather similar to those of the equilibrium grain boundaries, except for the local distortions.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 49(1), 24-30, 2008-01-01

    The Japan Institute of Metals

References:  28

Cited by:  1

Codes

  • NII Article ID (NAID)
    10020088359
  • NII NACSIS-CAT ID (NCID)
    AA1151294X
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    13459678
  • NDL Article ID
    9319538
  • NDL Source Classification
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL Call No.
    Z53-J286
  • Data Source
    CJP  CJPref  NDL  IR  J-STAGE 
Page Top