An Experimental Investigation of Intermittent Flow and Strain Burst Scaling Behavior in LiF Crystals During Microcompression Testing (Preprint)
Abstract
Current research seeks methods for coarse graining the ensemble dislocation response. However, the physical understanding of intermittency micromechanisms is still lacking, thus limiting developments in this field. This paper reports on the first comprehensive experimental statistical study of plastic deformation of LiF microscopic samples having low initial dislocation densities, in both as-grown and gamma-irradiated conditions. The investigations used the microcompression testing method. Data sets were evaluated independently for the loading and flow deformation stages for each material. Investigations examined evolution of the strain-burst response in both the spatial and temporal domains. A new technique (described in detail) provided advances in quantitative evaluations of the statistical data relative to previous studies.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2010
- Accession Number
- ADA522075
Entities
People
- C. E. Woodward
- Dennis M. Dimiduk
- E. M. Nadgorny
- M. D. Uchic
- Paul A. Shade
Organizations
- Michigan Technological University