Ti 添加冷延鋼板のγ値の面内異方性および再結晶集合組織

概要

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Planar anisotropy of γ value in 75% cold-rolled and annealed steel sheets was largely affected by the contents of carbon and titanium and the slab heating temperature on hot rolling. Planar anisotropy which was closely related to texture was classified into three types : namely, type I, γ_<45><γ_0<γ_<90>, with a texture similar to that of usual rimmed steel sheet, type II, γ_0<γ_<45><γ_<90>, with (111) [112^^-] (near (111) [112^^-] or (554) [225^^-]) preferred orientation, and type III, γ_0<γ_<90><γ_<45>, with a texture similar to that of as cold rolled sheet. In the case of Ti/C atomic concentration ratio being less than about 1, type I was obtained, and in the case of Ti/C ratio being considerably higher than 1, type II was obtained, while it was not so much varied even though slab heating temperature was changed. When Ti/C ratio was about 1, the anisotropy was widely varied from type I or II to type III, as the slab heating temperature was increased. Mechanism of the development of the above recrystallization textures was discussed in relation to TiC fine precipitates which affected recovery and recrystallization processes.
社団法人日本鉄鋼協会の論文
1971-06-01