ＡＺ９１マグネシウム合金の結晶粒微細化に及ぼす炭素粉末添加効果
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概要
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Grain refinement of cast magnesium alloys containing Al is attained by adding carbon materials. This technique is well established. However, it is important problem that C2Cl6 as grain refiner generates dioxin matters. Therefore, it is impossible to use grain refiners containing chloride. This study was performed to develop a new grain refiner containing C element instead of harmful C2Cl6. Carbon is an important element for grain refining of the commercial AZ91 magnesium alloy. Pure carbon (99.9%) powder with high-purity argon gas carrier was blown into the molten AZ91 magnesium alloy. Fine grains were obtained by addition of the carbon powder. Foreign substances as nucleants could be observed in the center of each grain. The result of EPMA analysis indicated that the foreign substance was consisted of Al, C and O.
- 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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