鋳塊における等軸晶領域の生成機構と鋼塊の負偏析の成因について

概要

論文の詳細を見る
99.99% Al, 99.8% Al containing 0.13% Fe and 0.07% Si, and Al-Cu alloys containing 0.1-4% Cu were solidified in static or dynamic moulds. Mechanical barriers were placed in the mould in some experiments. The equiaxed zone in castings was shown to derive from crystallites formed in the upper part of the advancing interface of solid shell during the initial stages of solidification. It was also shown that the crystallites sediment along the advancing interface of solid shell and are piled up on the bottom. The formation of these crystallites is probably due to partial remelting of dendrite casesed by the marked temperature fluctuations in the melt. The formation mechanism of negative segregation in steel ingots was explained based on the experimental results.
社団法人日本鉄鋼協会の論文
1969-05-01