すべり摩擦を受けた(001)銅単結晶における結晶の回転と小角粒界の形成  [in Japanese] Lattice Rotation and Formation of Low-Angle Boundary in a (001) Copper Single Crystal Subjected to Sliding Wear  [in Japanese]

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Author(s)

    • 井野谷 潤一 INOTANI J.
    • 大阪市立大学工学研究科機械物理系専攻 Department of Intelligent Materials Engineering, Faculty of Engineering, Osaka City University
    • 兼子 佳久 [他] KANEKO Y.
    • 大阪市立大学工学研究科機械物理系専攻 Department of Intelligent Materials Engineering, Faculty of Engineering, Osaka City University
    • 橋本 敏 HASHIMOTO S.
    • 大阪市立大学工学研究科機械物理系専攻 Department of Intelligent Materials Engineering, Faculty of Engineering, Osaka City University

Abstract

  A sliding wear test was conducted on a copper single crystal having (001) surface. Formation of fine grains was recognized locally near the worn surface. To find a criterion for generation of low-angle boundaries during the sliding wear, lattice rotation of the matrix and misorientation between adjoining points were measured using electron backscatter diffraction (EBSD) analysis. Particularly, we paid attention to the low-angle boundaries that were distant from the worn surface. Beneath the fine-grained area, orientation of the matrix continuously changed along the direction of depth. The continuous lattice rotation was understood from a concept of geometrically necessary (GN) dislocations whose density is proportional to a lattice rotation gradient ∂φ/∂<i>x</i>. Increase in the lattice rotation gradient that was measured from the EBSD analysis was recognized near the worn surface. However, at the subsurface layer where low-angle boundaries were generated, the lattice rotation gradient was no longer a function of depth, and was smaller than that of the region where the continuous lattice rotation occurred. Accordingly, the generation of the low-angle boundary could be caused by rearrangement of the dislocations that was induced by the sliding wear.<br>

Journal

  • Journal of the Japan Institute of Metals and Materials

    Journal of the Japan Institute of Metals and Materials 72(8), 625-630, 2008-08-01

    The Japan Institute of Metals and Materials

References:  17

Codes

  • NII Article ID (NAID)
    10024272958
  • NII NACSIS-CAT ID (NCID)
    AN00062446
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    00214876
  • NDL Article ID
    9613929
  • NDL Source Classification
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL Call No.
    Z17-314
  • Data Source
    CJP  NDL  J-STAGE 
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