ニッケル‐銅およびニッケル‐コバルト合金のヤング率について

抄録

The apparatus for measuring Young’s modulus used for the present experiments is based on the lateral vibration method of the cantilever type, in which the stress acting on a specimen is very small, as the specimen has a small round section and the amplitude of its resonance frequency is also very small. In nickel-copper alloys, Young’s modulus of copper rises with a gentle slope with an addition of nickel and shows a maximum at 30∼40% copper. But, within the ferromagnetic range (less than 36% copper at ordinary temperatures), Young’s modulus shows a minimun at about 20% copper, being in qualitative agreement with observations of Yamamoto and of Shibuya-Fukuroi. In nickel-cobalt alloys, Young’s moduulus of nickel rises monotonously as the cobalt content increases.