|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Deformation and Transitions at Interfaces
||Crystallographic Rotation, Deformation, and Damage
||Jay D. Carroll, Hojun Lim, Brad Boyce, Corbett Battaile, Blythe Clark
|On-Site Speaker (Planned)
||Jay D. Carroll
Validation studies of crystal plasticity finite element models (CP-FEM) typically compare model predictions of strain fields with experimental measurements. Understanding grain rotations and their relationship to local deformation is necessary for trustworthy strain field predictions as well as deformed texture predictions from CP-FEM models. This work presents experimental measurements of grain rotations of single crystal Ta specimens due to applied deformation. These measurements, made by repeated electron backscatter diffraction (EBSD) measurements, are compared to predictions from a BCC crystal plasticity model. Multicrystal specimens are also used to validate CP-FEM predictions of both grain rotations and strain by comparisons to experimental strain measurements from high resolution digital image correlation and EBSD measurements. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.