Low volume fraction SiCp/AA 380.0 composites fabricated by vacuum infiltration

Wen-Sheng Chung*, Shou Yi Chang, Su Jien Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A vacuum infiltration process has been developed to fabricate the aluminum matrix composites reinforced with low volume fraction (<50 vol%) of SiCp. Generally, it is difficult to fabricate low volume fraction particulate composites by traditional infiltration processes because the particles always pack up to about 50 vol% in the preforms or compacts. In this study, the powder compacts were prepared of the well-mixed Ni-coated SiCp and pure aluminum powders and then were packed in quartz tubes. An aluminum alloy (Al-8.7% Si-2.6% Cu) with a composition similar to AA 380.0 was used to infiltrate these compacts. Experimental results showed that the infiltration temperature of 640 °C is favorable for the fabrication of these composites. Infiltration behavior, microstructure, nickel distribution, bending test, and fractography of the composites were investigated.

Original languageEnglish
Pages (from-to)803-810
Number of pages8
JournalJournal of Materials Research
Volume14
Issue number3
DOIs
StatePublished - 1 Jan 1999

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