Microstructurally Based Prediction of High Strain Failure Modes in Crystalline Solids
Abstract
New three-dimensional dislocation-density based crystalline plasticity formulations was used with grain-boundary (GB) kinematic interfacial schemes, void nucleation and growth formulations, specialized three-dimensional computational models, nonlinear fracture methodologies, and in-situ experiments to predict how combinations of ductile failure modes initiate and evolve, at different physical scales, to complete rupture in f.c.c. and b.c.c. systems with a focus on aluminum alloys. The proposed methodology provides an integrated framework to simultaneously handle different interrelated physical mechanisms, such as a myriad of representative dislocation-density interactions with high and low angle GB interfaces, the growth and coalescence of a population of voids, and how these interactions can lead to either intergranular or transgranular failure.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 05, 2016
- Accession Number
- AD1020841
Entities
People
- M.A. Zikry
Organizations
- North Carolina State University