| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1501958 | Scripta Materialia | 2009 | 4 Pages |
Abstract
A new method to produce bulk nanocrystalline metal matrix composites is presented. A metal powder is treated to obtain a relatively brittle layer with a defined thickness on the surface. The precompacted powder is deformed by high-pressure torsion until a dense bulk nanocrystalline material is formed. Due to fragmentation of the thin layer, it is possible to incorporate nanometre-sized dispersions into the nanocrystalline metal matrix. As an example, an oxidized nickel powder is investigated in which the thermal stability and microhardness are extraordinarily enhanced.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
A. Bachmaier, A. Hohenwarter, R. Pippan,