Call For Paper Volume:6 Issue:11 Nov'2019 |

EVALUATION OF ALUMINIUM HYBRID METAL MATRIX COMPOSITES (AA 6082 AND AA 5052) FOR TRIBOLOGICAL APPLICATIONS

Publication Date : 29/11/2019


DOI : 10.21884/IJMTER.2019.6030.LOAHR

Author(s) :

F Shaik Abdul Kader M , RajKumar.G.


Volume/Issue :
Volume 6
,
Issue 11
(11 - 2019)



Abstract :

In general, aluminum alloy components are light in weight and widely used in general engineering applications. But, they lack in good resistance to wear, particularly under poor, partial or boundary lubricated conditions Aluminum based Metal Matrix composites (MMCs) have become a very valuable addition to the field of newer materials for high performance tribological applications. This research work aims to identify the ability of AA 6082 to acquire resistance to wear, when they were cast as composites with graphite, ZrO2 and B4C as reinforcements. In all the investigations, the wear tests were conducted on pin-on-disc apparatus at room temperature. In this work, AA 6082 are reinforced with 5, 10, 15 and 20 wt. % of graphite. The dry sliding wear of the aluminum/graphite particulate was found to decrease with graphite content and touched a minimum wear rate with 5 wt. % graphite content. The coefficient of friction of AA 6082/ ZrO2 & B4C with graphite composites were also found to decrease with the addition of graphite particles and recorded a 2.5 times lower values than that of the base alloy AA 6082. The AA 6082 produced with 2 % of B4C particulates exhibited an increase in the hardness, with increasing volume fraction of particulates, because of the increase in the ceramic phase of the matrix alloy. The wear rate at 10 vol. % of B4C is 45 times lower than the wear rate for the base alloy AA 6061 material and 52 times lower than the wear rate for the AA 7075 matrix material.


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EVALUATION OF ALUMINIUM HYBRID METAL MATRIX COMPOSITES (AA 6082 AND AA 5052) FOR TRIBOLOGICAL APPLICATIONS

November 16, 2019