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摘要: 用脉冲回波法测量了TC4、16Mn、Al2O3陶瓷从室温到1 000 ℃的纵波与横波声速,由声速得到绝热弹性模量。给出了E、G随温度变化的回归方程。对材料熔点做了估算。Abstract: The velocities of longitudinal and shear waves in TC4, 16Mn and Al2O3 ceramics were measured by a pulse-echo technique from 15~1 000 ℃. Adiabatic elastic moduli are calculated from these velocities. Regression equations of E, G vs temperature are given by the regression analysis. The melting temperatures are estimated in the paper.
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Key words:
- high temperature /
- elastic moduli /
- melting temperature
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