Dynamic Properties of LF-6 and LY-12 Aluminum Alloy under High Temperature－High Temperature Shearing Modulus Measurement

Investigations of high temperature shearing medulus with the torsional Hopkinson bar method, of LF-6 and LY-12 aluminum alloy at temperatures up to 440 ℃, is introduced, elastic modulus and Poisson ratio of LF-6 aluminum alloy are reported. Results show that these dynamic properties, especially at high temperatures, are generally higher than their static ones, LF-6 and LY-12 aluminum alloy are sensitive to both temperature and loading rates, but their sensitivity to temperature at high strain rates is less than that in static loading rate. In this paper relations of the shearing modulus and elastic modulus with temperature are given.