Microstructure and tensile properties of compacted, mechanically alloyed, nanocrystalline Fe-Al
- Dept. of Energy, Albany, OR (United States). Albany Research Center
Data on mechanical properties of nanocrystalline materials have been limited, due in part to the difficulty in producing consolidated nanocrystalline materials of sufficient quantity for characterization and evaluation. A second problem is consolidation and retention of the nanostructure. A vacuum hot-pressing consolidation program has been developed to produce full-dense compacts from attrition milled, mechanically alloyed, nanograin micron-size particles of Fe-2 wt pct Al powder. The resulting compacts were of sufficient size to allow evaluation of microstructure, density, hardness, and tensile properties. The compacted microstructure was a composite of pure iron submicrograins and Fe-Al nanograin clusters. Tensile strength was found to be proportional to the sample`s density squared. For full-dense compacts, tensile strength of nanocrystalline compacts approaching 1 GPa was obtained.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 417870
- Journal Information:
- Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Journal Name: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science Journal Issue: 10 Vol. 27; ISSN 1073-5623; ISSN MMTAEB
- Country of Publication:
- United States
- Language:
- English
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