Electron microscopy analysis of grain boundary structure and composition in superplastically deformed Al-Mg alloys
Conference
·
OSTI ID:468838
- Pacific Northwest Lab., Richland, WA (United States)
Evaluation of grain boundary composition and structure in superplastically deformed AA5083-based alloys (Al-4.5Mg-1.6Mn-0.2Zr) was carried out in a field-emission gun transmission electron microscope (FEG-TEM). During superplastic deformation at high homologous temperatures materials undergo extensive grain boundary sliding (GBS) which creates a flow of defects in the near-boundary region. Recent literature has shown that the grain-boundary composition in Al-Mg alloys is not necessarily the same as the matrix, and that these differences can have an effect on GBS.
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 468838
- Report Number(s):
- CONF-960877--
- Country of Publication:
- United States
- Language:
- English
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