研究論文
熔解条件の相異に伴う鋳鉄の組織変化に関する一実験
1960 年 32 巻 1 号 p. 18-25
詳細
1960 年 32 巻 1 号 p. 18-25
The separation of flake graphites in gray cast iron seems to be originated from insoluble nuclei suspended in molten iron, both in hypo-and hyper-eutectic ranges. Though insoluble nuclei SiO2 or some cilicates are concievable, but SiO2 is more probable.
This idea has been confirmed by experiments. Flake graphites and pearlite in gray cast iron changed into eutectic graphites+ferrite by vacuum-melting, being super-cooled due to the loss of insoluble nuclei. Flake graphites and pearlite are regained by air-remelting of this vacuum-melted specimen, by obtaining insoluble nuclei again.
