S0302-3-2 塑性変形と熱処理による純銅圧延板の超音波速度変化([S0302-3]超音波非破壊評価の高精度化(3))

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概要

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• The ultrasonic velocities due to plastic deformation were measured and the summation of squared velocities, which was independent of texture, was calculated. The change in the summation in as-received copper, which has work hardening and dislocation, was smaller than annealed one. After giving 40% plastic strain, the specimens were held in 30 minutes under various annealing temperatures. And then the summation of squared velocities were measured. The summation increased rapidly around 300℃ which was identical with the recrystallization temperature. Moreover, 400℃ or more, the summation almost showed con- stant value. It is known that the temperature, 400℃, makes anneal in copper completely. Therefore it can be concluded that the summation of squared velocities has a connection with dislocation.

• 2010-09-04

著者

• 原 彩夏

  明石高専

関連論文

• S0302-3-2 塑性変形と熱処理による純銅圧延板の超音波速度変化([S0302-3]超音波非破壊評価の高精度化(3))

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