日本金属学会誌

J. Japan Inst. Metals, Vol. 13, No. 4 (1949),
pp. 31-34

On some Behaviours of High Speed Steels Quenched into Hot Bath

Masazo Okamoto1, Mituru Nagakura1

1東京工業大學金屬工學科

Abstract:

Behaviours in tempering of high speed. tels quenched into hot bath. were investigated as to hardness. specific gravity, microstructure, dilatometric and specific resistance measurements.
Firstly, the change of hardness and specific gravity for hot bath quenched specimens followed by tempering were dealt with, Secondly, the tertiary Ar'' transformation revealed in 650°C tempering was described. Lastly a decomposition at 650°C tempering for but bath quenched specimens and their Ar'' traneformation were discussed.


(Received 1948/10/10 Published 1949/04/20)

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