OS2012 冷間圧延した純チタンの集合組織と機械的性質の関係(OS20-3 チタンおよびLPSO型マグネシウム合金,OS-20 HCP金属の実験力学と計算力学)

概要

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This study systematically investigated the influence of cold-rolling on the crystallographic texture and mechanical properties of pure titanium and their anisotropy. Pure titanium was hot-rolled in plates and annealed for recrystallization. The plates were further cold-rolled by reducing the thickness by 30 %, 50 %, and 62 % in the same direction as the hot-rolling. The texture was investigated through EBSD analysis. The result showed that the annealed material possessed strong anisotropy of yield strength because of its sharp texture. Since the texture was eased by rotation of crystal grains and the formation of twins, the anisotropy of the yield strength was weakened by cold-rolling. The static strength increased by increasing the thickness reduction because resistance to plastic deformation was increased by work-hardening and changes in microstructure, such as extension of crystal grains and the formation of twins.
一般社団法人日本機械学会の論文
2011-07-16