MICROSTRUCTURE AND FRACTURE-BEHAVIOR OF SICP/AL-2618 METAL-MATRIX COMPOSITE

B. Y. Zong, B. Derby

Research output: Contribution to journalArticlepeer-review

Abstract

Spray formed SiC reinforced 2618 Al alloy has potential as an elevated temperature MMC, and its fracture behaviour and mechanical properties have been investigated. SEM observation of matched fracture surfaces and cross-sectional observation of fractured specimens indicate that the composite at T6 temper fractures mainly through SiC particle cracking and that this could begin at very early stages of strain, smaller than 1%. Damage evolution is measured in terms of modulus reduction tests and compared with metallographic observations of particle fracture beneath the fracture surface. Modulus reduction and mechanical property tests have been carried out over a range of temperatures up to 220 degrees C.
Original languageUndefined
Pages (from-to)1861-1866
Number of pages6
JournalJournal de physique IV. Colloque
Volume3
Publication statusPublished - 1993

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