研究論文
鉄—黒鉛共晶の一方向凝固組織図に及ぼす硫黄の影響
1979 年 51 巻 2 号 p. 76-81
詳細
1979 年 51 巻 2 号 p. 76-81
Effect of sulfur on the transition of solidification structure of iron-graphite eutectic were investigated by unidirectional solidification. In the eutectic containing sulfur less than 0.02%, the graphite structure transits from regular lamellar to irregular lamellar, colony, eutectic cell (fine graphite), successively, with the decrease in the ratio of temperature gradient G to growth rate V. In the eutectic containing 0.1%S, the graphite structure transits from irregular lamellar to eutectic cell (flake graphite), eutectic cell (fine graphite), successively, with the decrease in the G/V ratio. But irregular lamellar to eutectic cell transition was not so clear when the sulfur content was very high. Unidirectional solidification structure diagram can be drawn using these experimental results.
