日本金属学会誌

J. Japan Inst. Metals, Vol. 24, No. 11 (1960),
pp. 760-764

On the Recrystallization of High-Purity Chromium. (Studies on Pure Chromium, 4th Report)

Susumu Yoshida, Yukio Ohba and Norio Nagata


Abstract:

The authors studied systematically the recrystallization behaviour of pure chromium of 99.9% purity produced by the electrolysis of chromic acid and obtained the following results: (1) The primary recrystallization behaviour of high-purity chromium was observed to follow the wellknown general rules of recrystallization. (2) The minimum amount of working necessary for producing primary recrystallization was about 10% of reduction by rolling. (3) The activation energies for recrystallization were measured as 100 to 112 kcal/mol by isothermal measurements for specimens which were subjected to 73% reduction. (4) Grain growth due to boundary migration was observed during annealing above 1000°C for specimens which were subjected to 6∼9% reduction.


(Received 1960/6/14)

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