マグネシウム合金への電子ビーム合金化の可能性

概要

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The alloying was carried out with the pre-placed and fixed alloying element powders or with highly alloyed sheet weighted down on the substrate. The substrate was a plate of Magnesium alloy AZ31C. An electron beam with a rectangle equivalent cross section irradiated and melted both alloying element and substrate while they moved constantly in a vacuum chamber. The alloying elements tried were Tin, Zinc, Aluminum, Gold, Silicon and 4 other metals. Manganese and Silicon were unable to alloy. To explain this phenomena a model was constructed that a molten alloying element column lying at the front edge of molten Magnesium pool was hindered to enter the pool by the vapor pressure of Magnesium. The result of model calculation agreed well with the experimental results. Micro Vickers hardness of alloyed layers was higher than the substrate hardness.
公益社団法人精密工学会の論文
2002-11-05