G030143 AZ31マグネシウム合金における常温の機械的特性に及ぼす結晶粒組織の影響([G03014]材料力学部門一般セッション(14):機械的特性)

概要

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The magnesium alloy with many mechanical advantages is expected as structural material. However, the magnesium alloy does not have enough plastic deformability, because it has hexagonal close-packed structure. Therefore, the superplastic deformation with the grain boundary sliding is paid to attention. Huge plastic deformation can be realized by the superplastic deformation. On the other hand, a dynamic recrystallization is brought to the microstructure of the magnesium alloy by the superplastic deformation. It supposes that the change of this grain structure influences the mechanical properties. In this study, we investigated the influence of the superplastic deformation on the mechanical properties of the material, performing the tensile test at room temperature of AZ3 lmagnesium alloy after superplastic deformation. In addition, to investigate the correlation between the grain size and the mechanical properties at room temperature, the texture observation. As a result, the yield stress rose in the material after superplastic deformation.
一般社団法人日本機械学会の論文
2011-09-11