Modeling Dynamic Behavior and Texture Evolution in Pure Tantalum (Ta)

摘要

In order to model high strain rate deformation and texture evolution incommercially pure tantalum (Ta), description for the thermal elastic viscoplastic behavior of Ta single crystals is considered along with an associated polycrystal averaging scheme. The description incorporates a temperature dependent model for pencil glide on the planes of maximum resolved shear stress. Calculated stress strain data and texture evolution for this model are compared to those of a restricted glide model and to experimental data.