Effect of grain refinement on wear properties of Al and Al-7Si alloy

Rao, A. K. Prasada ; Das, Karabi ; Murty, B. S. ; Chakraborty, M. (2004) Effect of grain refinement on wear properties of Al and Al-7Si alloy Wear, 257 (1-2). pp. 148-153. ISSN 0043-1648

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.wear.2003.10.017

Abstract

The effect of grain size of Al and dendritic arm spacing (DAS) of α -Al in Al-7Si alloy on wear behaviour of Al and Al-7Si alloy were investigated in the present study. The results show that the wear rate decreases with the decrease in the grain size and DAS of Al and Al-7Si alloy, respectively, at a load of 50 N, sliding distance of 1800 m and sliding velocity of 1 m s-1 under dry sliding condition. Al-7Si alloy was grain refined using various grain refiners such as Al-1Ti-3B, Al-3Ti and Al-3B while Al was grain refined with Al-5Ti-1B. The results suggest that the wear properties are not dependent on the type of grain refiner used, but depend on the grain size/DAS of the metal/alloy and the presence of second phase (eutectic Si in Al-Si alloy). Effect of fading of grain refiner on wear rate was also clearly observed.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:ear; Grain Refinement; Al; Al-7Si Alloy; Master Alloys
ID Code:73808
Deposited On:07 Dec 2011 04:58
Last Modified:07 Dec 2011 04:58

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