Elastic Constants of Al-Cu Solid-Solution Alloys and Their Variations by Aging Treatments

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概要

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• Supersaturated solid-solution alloys of Al-Cu systems of up to 8 at%Cu were prepared by means of heat treatments under a pressure of 5.4 GPa and a temperature of 720℃ for 10 hours. The elastic constants of the prepared specimens were measured by a three-dimensional resonance method. The Young's modulus E and the shear modulus G of the solid solutions increased with increased concentrations of the Cu atoms in the alloys, and features related to the mean numbers of valence electrons per atom (e/a) were discussed by the free-electron theory. The specimens of the solid solutions 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 of the Al-6 at%Cu specimens were also measured throughout various stages of the treatments.

• 一般社団法人日本機械学会の論文
• 1988-10-15

著者

• Senoo Masafumi

  Faculty Of Engineering Mie University

• Hayashi Takefumi

  Laboratory Of Musashino Electrical Communication Nippon Telegraph And Telephone Corporation

関連論文

• Measurement of the Elastic Constants of Polycrystals in a Cylindrical Specimen by the Resonance Method : Elastic Anisotropy of an Axisymmetrical Specimen and Measurements at Low and High Temperatures : Solid-Mechanics, Strength of Materials
• Calculation of Temperature and Pressure Dependence of Elastic Constants for Alminum
• Measurement of the Elastic Constants of Polycrystals by the Resonance Method in a Cylindrical Specimen : Measurement at Liquid He Temperature
• Variations of Elastic Constants on Al-Si Alloys by Solid-solutioning under High Pressure
• Elastic Constants of Al-Cu Solid-Solution Alloys and Their Variations by Aging Treatments

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