In this study, the effect of mechanical milling time on microstructure, hardness and dry sliding wear behaviors of carbon nanotube reinforced aluminum matrix composites was investigated.Multi-walled carbon nanotubes (amount of 1%) were added to gas atomized AA7075 alloy as a reinforcement
material and it was mechanical milled five different times. Milled Al-CNTs composite powders were added in a steel mold and pre-formed by cold pressing and hot pressing. Pre-formed composites samples were sintered. Microstructures of produced samples were examined by Scanning electron microscope.
Density and hardness values were measured 1 ms−1 sliding speed, 30 N loads and five different sliding distances were used in dry sliding wear tests on pin on disc type wear apparatus. As a result of the studies, it was found that the particle size increased as the milling
time increased. Powders milled for 100 min had the largest particle size, whereas powders milled for 120 min had a smaller particle size. The results indicated that composites mechanically milled for 120 min had both the highest hardness value and the lowest weight loss.
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Document Type: Research Article
Department of Industrial Design Engineering, Karabük University, Karabük, 78100, Turkey
Department of Manufacturing Engineering, Karabük University, 78100 Karabük, Turkey
Department of Chemical Engineering, Gazi University, 06500 Ankara, Turkey
Publication date: April 1, 2020
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