| Autor: |
Sun, You Ping, Zhou, De Jian, Xu, Wu Bin, Shi, Guang Lin, Li, Wei |
| Zdroj: |
Applied Mechanics and Materials; January 2013, Vol. 281 Issue: 1 p453-456, 4p |
| Abstrakt: |
Distribution of SiC particles in powder metallurgy (P/M) Al/SiCp composite during hot extrusion were investigated in this paper. It has been shown that a homogenous distribution of SiC particles in as-extruded rods has been achieved. There was an order and directional distribution of SiC in the longitudinal direction, which was related to the stress state associated with hot extrusion. With a small extrusion ratio (11), many obvious interfaces among the powders remained existent since the extrusion stress was not large enough to achieve a metallurgical bond. The interfacial bonding strength of the composite can be enhanced with a higher extrusion ratio, and metallurgical interfaces were achieved with the extrusion ratio of 17. Ambient tensile tests demonstrate that the mechanical properties change along with the extrusion ratio’s increasing. |
| Databáze: |
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