Al-5 mass%Mg合金冷間圧延材の焼なましに伴う電気比抵抗比の変化

概要

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Changes in the specific resistance ratio due to the isothermal annealing treatment were investigated experimentally for the cold rolled Al-5 mass % Mg binary alloy. Isothermal annealing treatments were carried out at temperatures ranging from 373 to 573 K. The following findings were obtained from the present study : (1)Precipitation of β-phase was promoted by the strain induced by the cold rolling, leading to remarkable increments in the specific resistance ratio with increasing annealing time which were observed for the 90% cold rolled Al-5 mass % Mg alloy as compared to those of the 5083 alloy. (2) Microscopic strains in the cold rolled Al-5 mass % Mg specimens decreased with increasing in annealing time. On the otherhand, microscopic strains in the specimens annealed at 373 K for more than 120 ks increased. (3)Increasing the rate of the specific resistance ratio led to the peak value at the annealing temperature, 453 K.
一般社団法人日本機械学会の論文
1994-09-25