Deformation localization and ultrasonic wave propagation ratein tensile Al as a function of grain size

摘要

The grain-size dependence of the space period (wavelength) of flow localization observed in the stage,of parabolic work hardening of polycrystalline A1 has been investigated. The dependence behavior has been defined in the range of grain sizes 8 x 10(-3) less than or equal to D less than or equal to 4.5 mm. and the significance of the relationship has been elucidated. The effect of grain size on the multi-stage behavior of plastic flow curve and on ultrasonic wave propagation rate has been considered. (C) 2002 Elsevier Science Ltd. All rights reserved. [References: 29]