放電プラズマ焼結法を利用した粒子分散型マグネシウム複合材料の創製(S18-2 粉末成形とその評価(2),S18 粉末成形とその評価)

概要

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Magnesium composites with Mg_2Si dispersoids via solid-state synthesis, which shows high specific mechanical properties has been produced in proceeding study. In this study, AZ31 as matrix and Si as temper were employed for raw material, respectively. The powder mixture of AZ31-Si was consolidated by cold press(CP) and Repeated Plastic Working(RPW), which homogeneous disperse and refinement of using powder. Produced compacts were sintered by Spark Plasma Sintering(SPS) at the temperature of Mg_2Si synthesis. Finally, the sintered Mg_2Si/Mg composites were evaluated on microstructures and densities as a function of sintering temperature. As a result, both of the grain size of Mg matrix and the particle size of Mg_2Si increased as SPS temperature elevated, while the effective of dispersion, due to RPW, could be kept after SPS with high temperature. Further, density was linearly increased with increase of SPS temperature, as well.
社団法人日本機械学会の論文
2004-09-04