高圧下で凝固したAl-8%Si合金の肉厚感受性について
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概要
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Mechanical properties and microstructures of squeeze and gravity castings having different diameters from 30 to 140 mm were measured. As the diameter of squeeze and gravity castings is increased, mechanical proparties particularly of gravity castings lower. Elongation and impact strength are noticeably insensitive to diameter change. Squeeze castings have dendrite cell size about two third of that the gravity castings have. Eutectic Si particle size in squeeze castings is unaffected by diameter change. The solidification time for both castings are proportional to (V/S)2 in accordance with Chvorinov's law. The proportional constants of squeeze and gravity castings are 21.2 and 42.1 s/cm2 respectively. The solidification time for squeeze castings is about one half of that for gravity castings having the same diameter.
- 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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