Anelasticity of Zinc

Abstract

Anelastic properties of zinc single crystal of high purity (99.996 percent) have been studied, using bars vibrating transversely at audio frequencies in free‐free modes. Internal friction, effective elasticity, and shape of resonance curve were determined against the strain amplitude. When the driving force exceeds a critical value, the internal friction increases, its maximum‐amplitude‐frequency decreases, and its resonance curve becomes asymmetrical. Furthermore, under this condition a discontinuous phenomenon, which is supposed to be closely correlated with slips occurring in the crystal, has been found. This discontinuous phenomenon was recorded under different stresses.