A comparative study on the wear properties of coarse-grained Al6061 alloy and nanostructured Al6061–Al2O3 composites |
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Affiliation: | 1. State Key Laboratory for Advance Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;2. School of Materials Science and Engineering, University of Science and Engineering Beijing, Beijing 100083, China;1. Department of Surgical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX;2. Department of Neuroradiology, The University of Texas M.D. Anderson Cancer Center, Houston, TX |
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Abstract: | Wear behavior of nanostructured Al6061 alloy and Al6061–Al2O3 nanocomposites produced by milling and hot consolidation were investigated. The samples were characterized by hardness test, pin-on-disk wear test, X-ray diffraction (XRD), and scanning electron microscopy (SEM). Nanocomposites containing 3 vol% Al2O3 showed a maximum hardness of 235 HV and optimum wear rate of 4×10−3 mg/m. Increasing the amount of Al2O3 up to 5 vol% resulted in decrease in hardness values (∼112 HV) and a sharp rise in wear rate (∼18×10−3 mg/m). |
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