1706 α+γ 2 相域での大歪加工による微細結晶粒鋼の機械的性質

概要

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It has been tried to refine ferrite grain size due to ferrite recrystallization and ferrite transformation from deformed austenite applying large strain in (γ+α) dual-phase region. In this study, the microstructure before deformation was optimized for grain refinement. It is found that both low deformation temperature (750∿800℃) and relatively low α fraction are effective for grain size refinement in this process, then 1.1μm grained material was obtained by increasing carbon content for reducing α fraction and lowering deformation temperature.
社団法人日本機械学会の論文
2000-07-31