AC2B合金の溶湯補給性に及ぼす鉄およびマンガン量の影響
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概要
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In castings of Al-Cu-Si AC2B alloys containing more than 0.5%Fe, the shrinkage porosity is encouraged with an increase in iron content. Such shrinkage porosity results from the fact that the alloys are uncompensatory for shrinkage in the early stage of solidification because the crystallization temperature of the needle-like iron compound rises with an increase in iron content and it results in the rise of the feeding limit temperature. When Mn or Be is added to these alloys, the morphology of the iron compound changes to chinese script. Consequently, the occurrence of the shrinkage porosity is inhibited by the improved feedability of the alloys, which are able to compensate for solidification shrinkage until lower temperatures.
- 日本鋳造工学会の論文
日本鋳造工学会 | 論文
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