日本金属学会誌

J. Japan Inst. Metals, Vol. 13, No. 4 (1949),
pp. 19-22

On the Anomalous Temperatures of Cu, and the Regularity existing in Them

Mituru Sato1, Tosiro Suzuoka1

1東北大學金屬材料研究所

Abstract:

The curves of (degree of cold work)-(anomalous temperature) which were drawn from the experimental data of S. Satô [Heat evolution. Sci. Rep. 27 (1939), 278] and those of T. Suzuki [True Specific heat. MS.], were extended to the point where the above degree is zero, and the temperatures were determined, as 230° and 277°, expecting that they are anomalous ones for annealed Cu. Further, from the result of investigation on the diffusion between Cu and An, carried out by S. Tanaka and C. Matano [Mem. Kyoto Univ., 13 (1930), 343], it was confirmed that 230° is really an anomalous temperature for the annealed specimen. Finally, from the experimental result obtained by A. Avaramescu [True Specific heat. Zeits. tech. Phys. 20 (1939) 213]., it was found that, approximately, 550° is also an anomalous temperature of Cu. Thu-, it was concluded that the anomalous temperatures are 230°, 277°, 550° and 1083° (m, p.), in Cu, and that there exists the following regularity in them; namely,
(0°K_??_277°):(277°_??_1080°)=1:1.46
=2:3.
(0°K_??_230°):(230°_??_550°)=1.56:1
=3:2.


(Received 1948/08/25 Published 1949/04/20)

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