Microstructure and Mechanical Properties of Al-AL4C3 Materials
Abstract
Dispersion strengthened aluminium compacts have been prepared by powder metallurgy. The base microstructure is aluminium matrix strengthened with dispersed ceramic particles. The strengthening is direct by dislocation movement retardation, and indirect by deformation induced microstructure modification in the next technological steps. The method of mechanical alloying process is described. Carbon transformation to carbide Al4C3 is characterised for different heat treatment schedules and nine commercial carbon powders tested. The micromechanism of carbon incorporation into the metallic powder, and the compacting of it are described. The influence of dispersed carbides on mechanical properties is evaluated together with the influence of deformation on microstructure and properties. Ductility anomalies up to a type of superplasticity were observed at certain tensile testing strain rates.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 18, 2004
- Accession Number
- ADA426351
Entities
People
- L'udovit Parilak
- Michal Besterci
Organizations
- Slovak Academy of Sciences