Influence of grain refinement and modification on dry sliding wear behaviour of Al-7Si and Al-7Si-2.5Cu cast alloys

被引：24

作者：

Basavakumar, K. G. ^{[1
]}

Mukunda, P. G. ^{[1
]}

Chakraborty, M. ^{[1
]}

机构：

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

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2007年 / 186卷 / 1-3期

关键词：

grain refinement; modification; tribometer; Al-7Si cast alloys; Al-7Si-2.5Cu cast alloys;

D O I：

10.1016/j.jmatprotec.2006.12.039

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructures and dry sliding wear behaviour of Al-7Si and A1-7Si-2.5Cu cast alloys were studied after various melt treatments like grain refinement and modification. Results indicate that combined grain refined and modified A1-7Si-2.5Cu cast alloys have microstructures consisting of uniformly distributed alpha-Al grains, interdendritic network of fine eutectic Al-silicon and fine CuAl2 particles in the interdendritic region. These alloys exhibited improved wear resistance in as cast condition when compared with those of alloys in untreated or modified conditions. This paper attempts to investigate the microstructures and sliding wear behaviour of the cast Al-7Si and Al-7Si-2.5Cu alloys by addition of either grain refiner or modifier and also by addition of both these. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：236 / 245

页数：10

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