| Kinematical Modeling of Kink Microstructure Tomonari Inamura1; 1TOKYO INSTITUTE OF TECHNOLOGY, Yokohama, Japan; PAPER: 213/Magnesium/Regular (Oral) SCHEDULED: 17:10/Thu. 24 Oct. 2019/Adonis ABSTRACT: A kinematical model of kink microstructure in a material which causes slip deformation on a specific plane is proposed based on the continuity of deformation at interfaces [1]. A kink band was regarded as a domain with a homogeneous shear, being rank-1 connected to the matrix. Ridge and ortho kink were modeled as rank-1 connections between the kink bands. Owing to the simple geometry of the kinks, the kink plane and the crystallographic rotation of the kink band were obtained in analytic forms as functions of the magnitude of the shears inside kinks. It was found that positive and negative partial wedge disclinations are inevitably formed in any kink band connection when the junction plane of the kink bands does not reach the surface of the body. In addition, it is possible for disclinations to annihilate by connection of suitable kink bands to a microstructure with zero elastic energy. A universal mechanism of kink strengthening in the LPSO Mg alloy is discussed. References: [1]T. Inamura, Acta Materialia, in press |
