日本金属学会誌

J. Japan Inst. Metals, Vol. 13, No. 6 (1949),
pp. 34-35

Formation of Columnar Austenite Grain by Carburising α Iron

Tokuhiko Mochida1

1東北大學金屬材料研究所

Abstract:

When α iron is corburised, it readily transforms into γ iron as it absorbs carbon. By this phase change, the austenite grain formed at the surface of the specimen develops a columnar form towards the in side. When the alloy corsisting if α and γ at the temperature of the carburisation is rarburised no such columnar grain is obtained. These facts are similar to those of the case in which the austenite or a mixture of austenite and ferrite are decarburised, reselting in columnar or granular ferrite.


(Received 1948/11/18 Published 1949/06/20)

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