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

被引：95

作者：

Rao, AKP ^{[1
]}

Das, K ^{[1
]}

Murty, BS ^{[1
]}

Chakraborty, M ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India

来源：

WEAR | 2004年 / 257卷 / 1-2期

关键词：

wear; grain refinement; Al; Al-7Si alloys; master alloys;

D O I：

10.1016/j.wear.2003.10.017

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The effect of grain size of Al and dendritic arm spacing (DAS) of alpha-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 At-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. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：148 / 153

页数：6

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