G0400-1-3 純銅の内部摩擦に及ぼす結晶組織の影響([G0400-1]機械材料・材料加工部門一般(1):金属材料と加工)

概要

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Internal friction is the damping capacity of a solid material and is known as one of the structural sensitive properties. In this study, the effect of the crystal texture of pure copper on its internal friction was investigated. The crystal texture was controlled by changing the heat treatment temperature. The internal friction (logarithmic decrement) was measured under various temperatures from room temperature to high temperature up to 1073K using the inverted torsion pendulum apparatus. It has been found that the internal friction consists of the background component and the peak component. The former increases gradually with the temperature. The latter is observed under the temperature 500-900K and is expected to be due to the viscous slip at the crystal grain boundaries.
一般社団法人日本機械学会の論文
2010-09-04