Abstract
The present Report completes the investigations in the frame of the project for the first year. It is important to estimate our achievements in the investigation of properties of nanocrystalline materials obtained by severe plastic deformation and their production. We think that the main results obtained can be summarized as follows: (1) We performed an improvement of the die-set for equal channel (ECA) pressing and torsion under high pressure with the aim to increase dimensions of the samples produced and to conduct processing of low ductile materials. (2) It was established that in pure metals severe plastic deformation led to the formation of an ultra fine-grained structure with a mean grain size of 100-200 nm, while in alloys due to severe plastic deformation and/or special methods of treatment (a decrease in the temperature of deformation, an increase of the pressure applied etc.) the grain size could be decreased down to a few tens of manometers.
Keywords
Severe plastic deformationNanocrystalline materialMaterials sciencePressingGrain sizeTorsion (gastropod)Deformation (meteorology)MetallurgyComposite materialHigh pressureEngineering physicsNanotechnologyEngineering
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Publication Info
- Year
- 1996
- Type
- report
- Citations
- 2
- Access
- Closed
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Cite This
Р. З. Валиев
(1996).
Properties and processing of nanocrystalline materials. Quarterly report.
.
https://doi.org/10.2172/427010
Identifiers
- DOI
- 10.2172/427010