Dry sliding wear of an alumina short fibre reinforced Al-Si alloy against steel

Dry sliding wear of an alumina short fibre reinforced Al-Si alloy against steel Dry sliding wear tests were carried out on an unreinforced Al-12%Si alloy and on composites of the same alloy reinforced with 5, 8, or 12 vol.% short alumina fibres by means of a block-on-ring (bearing steel) wear test machine. The worn surfaces and cross-sections through the surfaces were examined by optical microscopy and by scanning electron microscopy. It was found that above a critical applied load, there exists a transition to severe wear both in the unreinforced Al-Si alloy and in the composites, but the transition loads for composites are much higher than that of the unreinforced alloy, and increase with increasing the volume fraction of alumina fibre. It is also discovered experimentally that the presence of alumina fibres in the composites impedes the formation of a fragmented layer and hence improves the wear resistance at high loads. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Wear Elsevier

Dry sliding wear of an alumina short fibre reinforced Al-Si alloy against steel

Wear, Volume 195 (1) – Jul 1, 1996

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Publisher
Elsevier
Copyright
Copyright © 1996 Elsevier Ltd
ISSN
0043-1648
eISSN
1873-2577
DOI
10.1016/0043-1648(95)06803-1
Publisher site
See Article on Publisher Site

Abstract

Dry sliding wear tests were carried out on an unreinforced Al-12%Si alloy and on composites of the same alloy reinforced with 5, 8, or 12 vol.% short alumina fibres by means of a block-on-ring (bearing steel) wear test machine. The worn surfaces and cross-sections through the surfaces were examined by optical microscopy and by scanning electron microscopy. It was found that above a critical applied load, there exists a transition to severe wear both in the unreinforced Al-Si alloy and in the composites, but the transition loads for composites are much higher than that of the unreinforced alloy, and increase with increasing the volume fraction of alumina fibre. It is also discovered experimentally that the presence of alumina fibres in the composites impedes the formation of a fragmented layer and hence improves the wear resistance at high loads.

Journal

WearElsevier

Published: Jul 1, 1996

References

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