Elasticity of Zinc Crystals

Abstract

Young's modulus, E, has been measured by dynamic and static methods for 25 zinc single crystals. The results fit a parabolic curve when 1/E is plotted against the square of the cosine of the orientation. From the constants of this curve and earlier data on linear compressibility by Bridgman, are derived numerical values for the coefficients of compliance of the zinc crystal, as follows: S₁₁=8.38, S₁₂=0.5, S₁₃=−7.31, S₃₃=28.4, S₄₄=26.1, all ×10⁻¹³ cm²/dyne. Data on three crystals were taken from room temperature to 375°C. From these may be computed Young's modulus for any orientation and any temperature in the range given. Young's modulus decreases for all orientations with increasing temperature.