Rank-1 Connection of Kink Bands Formed by Non-Parallel Shears

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  • Inamura Tomonari
    Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology Laboratory for Future Interdisciplinary Research of Science and Technology, Institute of Innovative Research, Tokyo Institute of Technology
  • Shinohara Yuri
    Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology Laboratory for Future Interdisciplinary Research of Science and Technology, Institute of Innovative Research, Tokyo Institute of Technology

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Abstract

<p>The geometry of kink bands with the general shear direction on the unique slip plane was formulated and the connection between two kink bands formed by non-parallel shears on the slip plane was examined using rank-1 connection. For a kink deformation in a metal with a hexagonal lattice, we derived an equation that decomposes the general shear direction into two ⟨a⟩ basal slips. The rotation axis of the misorientation of kink band moves away rapidly from ⟨0110⟩ to ⟨1210⟩ as the second ⟨a⟩ basal shear component increased. We proved that any two kink bands formed by non-parallel basal shears can be rank-1 connected to each other. In addition to the wedge disclination, a mixed disclination at the junction of two kink bands formed by non-parallel basal shears was found.</p>

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 61 (5), 870-874, 2020-04-01

    The Japan Institute of Metals and Materials

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