日本金属学会誌

J. Japan Inst. Metals, Vol. 43, No. 12 (1979),
pp. 1131-1137

On the Ferrite Precipitation in 25Cr-20Ni Steels

Kenzaburo Kumada1, Takashi Naohara1 and Tsuneo Fujiwara2

1Faculty of Engineering, Ehime University, Matsuyama
2Faculty of Engineering, Ehime University, Matsuyama. Present address: Taio Paper Co., Ltd., Iyo-mishima

Abstract:

In order to study the phase transformation of austenite, 25Cr-20Ni steels cold-rolled with 0∼60% reductions were aged at 1073 K for various times up to 3000 h. Subsequently, the ferrite precipitation was investigated by means of optical and electron microscopy, magnetic powder pattern, magnetic analysis and electron diffraction.
The results obtained are as follows:
(1) In 25Cr-20Ni steels, ferrite precipitates from austenite and possesses the following orientation relationship with the matrix.


(Received 1979/04/17)

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