The effect of ultrasonic vibrations during solidification of light metals
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概要
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This is to report on the examination about the effect of ultrasonic vibrations to the solidification of light metals mainly on the micro and macro structure.(1) 50 cycle per sec. vibrations from electro-magnetic source do not make the grain size of super purity aluminium finer, but, the grain size of some aluminium alloys is made finer by such vibrations, though the dendrites are still remained.(2) In case of super purity aluminium, 20 kilocycle vibrations from the magnetostrictive generater make its grain size remarkably finer, and in the case of some aluminium and magnesium alloys, such vibrations make their grain size similar to that of permanent mold casting of the same metals, even after slower cooling. The grains thus made finer have not any dendrites.(3) To prevent from iron melting into the metal, wave guide should be aluminized.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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