Shock consolidation of nanocrystalline aluminum for bulk component formation
Journal Article
·
· AIP Conference Proceedings
- Material Science and Engineering, Georgia Institute of Technology, 771 Ferst Dr. Atlanta GA 30332 (United States)
- Sandia National Laboratories, PO Box 5800 MS-1181, Albuquerque NM 87185 (United States)
- School of Industrial Engineering, Purdue University, West Lafayette IN 47907 (United States)
Al 6061-T6 powder particles with a partially nanocrystalline graded microstructure in three distinct morphologies are compacted at an impact velocity of 650 m/s. Recovered samples are characterized to determine degree of compaction, deformation characteristics, and mechanical properties. Compacts range from 96-98% of theoretical density, exhibiting relatively low elastic moduli. Nano-indentation yields relatively consistent hardness values of {approx}1.4 GPa, indicating hardness of starting powders is preserved after compaction. Micro-indentation indicates varying degrees of compaction through specimen cross-section, which is supported by EBSD and optical microscopy.
- OSTI ID:
- 21039510
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 955; ISSN 0094-243X; ISSN APCPCS
- Country of Publication:
- United States
- Language:
- English
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