Abstract
The graphite/2024Al composites have been fabricated by improved Squeeze Exhaust Casting (SQEC) method. Two kinds of graphite preforms with porosities of 13% and 17% respectively were infiltrated with 2024Al (Al-5Cu-2Mg) alloy under the pressure of 73MPa. The disadvantages of traditional Squeeze Casting (SQC) were avoided and the distribution of aluminum alloy appeared homogenous 3D network in the composites. Flexural strength and Young's modulus were determined at room temperature. Compared to graphite preform, the composites exhibited a significant enhancement of mechanical properties. The flexural strength and Young's modulus of X-Y direction of G186/2024Al composites increased from 38.6MPa to 99.7MPa and from 10.1 GPa to 19.7GPa, respectively. The fracture mechanism of the composites was discussed on the basis of fracture surfaces.
| Original language | English |
|---|---|
| Pages (from-to) | 1471-1474 |
| Number of pages | 4 |
| Journal | Key Engineering Materials |
| Volume | 353-358 |
| Issue number | PART 2 |
| DOIs | |
| State | Published - 2007 |
| Externally published | Yes |
| Event | Asian Pacific Conference for Fracture and Strength (APCFS'06) - Sanya, Hainan Island, China Duration: 22 Nov 2006 → 25 Nov 2006 |
Keywords
- Graphite/2024Al
- Infiltration process
- Interpenetrating phase composites
- Mechanical properties
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