kirkuk university journal scientific studies

ISSN: 19920849 
Publisher: Kirkuk University 
Faculty: Science 
Language: Arabic and English 

This journal is Open Access 

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Effect of Heat Treatments on Dry Sliding Wear
Resistance of Aluminum –Cupper Alloys.
Adel M. Bash
Mechanical Eng. Dept.-Tikrit University
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Received Date: 9/4/2012 Accepted Date: 25/6/2014


In this study, aluminum-cupper alloys were prepared, where cupper amount was added to
aluminum in different percentages 4%, 5.5%.not exceeds degree of saturation 6% of the
weight of cupper. Alloys were prepared by melting and pouring in steel molds .Solution
heat treatment and aging are carried out at a constant temperature of 180 oC for different
aging times .Object of the present work is to study the effect of addition of cupper and heat
treatment on wear resistance of the pure aluminum .A pin – on-Disc technique was used to
evaluate wear rate of the specimens .Under variable laboratory condition represented by
effect of five different normal loads and five different sliding speed on wear rate were
examined for variable sliding time while hardness of steel disc was 35HRC .The result
shows that the wear rate increased with increasing applied normal loads and with
increasing sliding time .The result also show that the alloy Al-5.5%Cu has more wear
resistance than that of
Al-4%Cu .In additional, wear resistance were improved by heat treatment when compared
to the base alloys.

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Key Words: Al-alloys, Heat treatment, Wear alloying elements.


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