Misorientation mapping for visualization of plastic deformation via electron back-scattered diffraction.
- General Electric Global Research Center, Niskayuna, NY
The ability to map plastic deformation around high strain gradient microstructural features is central in studying phenomena such as fatigue and stress corrosion cracking. A method for the visualization of plastic deformation in electron back-scattered diffraction (EBSD) data has been developed and is described in this article. This technique is based on mapping the intragrain misorientation in polycrystalline metals. The algorithm maps the scalar misorientation between a local minimum misorientation reference pixel and every other pixel within an individual grain. A map around the corner of a Vickers indentation in 304 stainless steel was used as a test case. Several algorithms for EBSD mapping were then applied to the deformation distributions around air fatigue and stress corrosion cracks in 304 stainless steel. Using this technique, clear visualization of a deformation zone around high strain gradient microstructural features (crack tips, indentations, etc.) is possible with standard EBSD data.
- Research Organization:
- Sandia National Laboratories
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1000288
- Report Number(s):
- SAND2005-0822J
- Journal Information:
- Proposed for publication in the Journal of Materials Research., Journal Name: Proposed for publication in the Journal of Materials Research. Journal Issue: 1 Vol. 12; ISSN 1431-9276; ISSN MIMIF7
- Country of Publication:
- United States
- Language:
- English
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