OS0417 単軸圧縮負荷を受けるHCP単結晶におけるキング帯形成過程の結晶塑性解析

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  • OS0417 Crystal Plasticity Analysis of Development of Kink Bands in HCP Single Crystals Subjected to Uniaxial Compressive Loading

抄録

In plastically deformed hexagonal close-packed (HCP) metals, kink bands are frequently formed. The one possible formation mechanism for kink bands is the significant lattice rotation due to localized accumulation of basal slip. Therefore, the details of accumulation of basal slip during plastic deformation should be made clear to gain understandings of formation mechanism of kink bands. In this study, the localization of basal slip during compressive loading in single crystal magnesium with the dominant activation of basal slip system is numerically evaluated using a crystal plasticity finite element analysis method. The influences of initial crystal orientation, lattice rotation, hardening rate and strain rate sensitivity are studied.

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