Abstract:

In this study, was investigated the effect of aging time on wear behavior Cu-Al-Ni alloy (nicel aluminum bronze) produced by mechanical alloying method. Mechanical alloying powders were produced cold pressed (600 MPa) and green compacts of Ø10x6 mm dimensions. The produced green compacts were sintered at 950 °C for 60 min and cooled to room temperature in the furnace environment. Sintered samples were taken to the solution at 900 °C for 8 hours and then cooled rapidly in water. Aging processes were carried out at 500 °C for 20 min, 60 min and 80 min. After aging, standard metallographic studies done and microstructure, hardness and density were measured. In wear tests were used 2 ms-1 sliding speed, 2 different loads (25 N and 50 N) and 4 different sliding distance (250 m, 500 m, 750 m and 1000 m). As a result of the studies, the maximum hardness was obtained as 228 HV in the alloy aged 60 min. In the density results, the density decreased with increasing aging time and the lowest density value was measured as (6.08 gr/cm3) in the alloy aged for 60 min. In the wear test results, while the lowest weight loss was obtained in the alloy aged 60 min, the highest weight loss was obtained in the alloy aged 80 min.

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