Microstructure and Wear Properties of TiC/7075 Composites by In Situ Reaction Liquidus Curve Casting Method

Ping Xu; Feng Wang; Hui Min Liu; Xiang Dong Liu

doi:10.4028/www.scientific.net/MSF.675-677.1121

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HomeMaterials Science ForumMaterials Science Forum Vols. 675-677Microstructure and Wear Properties of TiC/7075...

Microstructure and Wear Properties of TiC/7075 Composites by In Situ Reaction Liquidus Curve Casting Method

Abstract:

7075 matrix alloy was fabricated by in-situ reaction liquidus curve casting method, and its as-cast microstructure was analyzed, the wear properties of these composites and matrix alloy were studied under the different conditions. The results show that the wear resistance of TiC/7075 composites is superior to 7075 matrix alloy in the same conditions (with same load or rotating velocity). Because of introduction of particle reinforcements, the wear resistance of the composite is enhanced by 1.5～4 times than that of its matrix. In addition, the wear mass loss of TiC/7075 composites increases almost with increase of load, but decreases with increase of rotating velocity. The wear resistance of the composites increases slightly at low load and high rotating velocity. The SEM analysis of the worn-out surface indicates that the wear mechanism of TiC/7075 composites is mainly abrasive wear.

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Materials Science Forum (Volumes 675-677)

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1121-1124

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.675-677.1121

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Online since:

February 2011

Authors:

Ping Xu, Feng Wang, Hui Min Liu, Xiang Dong Liu

Keywords:

Aluminum Matrix Composite (AMC), Friction, In Situ Tic Particle, Wear

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