高圧力溶体化処理 Al-Cu 合金の弾性定数とその時効による変化

概要

論文の詳細を見る
Supersaturated solid-solutioning alloys of the Al-Cu system of up to 8at%Cu were prepared by means of heat treatments under the pressure of 5.4 GPa and the temperature of 720 ℃ for 10 hours. The elastic constants of the specimens obtained were measured by a three dimensional resonance method. The Young's modulus E and shear modulus G of the solid solutions were increased with Cu contents, and such features related to the number of electrons per atom ratio were discussed by free electron theory. The specimens of solid solutions were then isochronally aged up to 450 ℃, and the variations of the elastic constants were measured step by step. The maximum shear modulus was observed during the precipitation of the θ' phase at 300℃-aging. Temperature coefficients of the moduli were also measured on the several specimens of different treatments.
一般社団法人日本機械学会の論文
1987-09-25