130 コンポキャスト法のモデル実験とAl_<18>B_40_<33>/AZ91D合金複合材料の作製(OS 複合材料CMC及びMMC)

概要

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The effects of stirring condition and setting position of reinforcement on reduction of pores in the composites fabricated by compo-casting process were investigated by the visualized modeling experiment using glycerin. Pores in composites were introduced by entrapping gas by stirring blade and the containing gas in as-received reinforcement particles. The distance between glade and liquid surface, the rotational speed of blade and the viscosity of matrix affect the entrapping of gas. Particles were mixed with matrix completely by placed in the bottom of die. Then, Al_<18>B_40_<33> particle and whisker reinforced AZ91D magnesium alloy matrix composites were fabricated by the compo casting under the condition acquiring from the visualized modeling experiment. The reinforcement in the composites fabricated under the condition of 33% solid fraction distributed uniformly. The refining of primary crystal and homogenous microstructure were acquired by using AZ91D chip as starting material or whisker as the reinforcement.
社団法人日本機械学会の論文
2001-11-02