Effect of Heat Treatments on Dry Sliding Wear Resistance of Aluminum –Cupper Alloys.
Kirkuk University Journal-Scientific Studies,
2014, Volume 9, Issue 2, Pages 79-100
AbstractIn 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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