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- W2007187969 abstract "The paper presents the experiments concerning the in? uence of SiC on the process of mechanical alloying of recycled materials in the form of aluminium chips. Oxidized aluminium chips used for the experiment were derived from waste products. Chemical, physical and engineering properties were characterized in the o rst step. Study shows repeatable chemical composition of the chips. Technological properties preclude the use of them as material for automatic charge (? ow rate about 30 s). Therefore attempts were made to produce a composite powder by using the powder metallurgy method. Mechanical alloying process of aluminium chips with different amounts of SiC (0, 20, 40 wt%) and addition of Zr (2 wt%) was performed in a high energetic mill. Milling time was 20 hours using a milling speed of 200 rpm. Then, the characterization of obtained aluminium matrix composite powder was made by using a light microscope and scanning electron microscopy SEM/EDX. On the basis of the results of the microstructure we can observe that after the MA process, SiC reinforcement is located inside the aluminium particles which cono rms the correct course of the process. The experiments showed that 40 wt% amount of SiC and 5 hours of the mechanical alloying allowed us to obtain the particles with an average area less than 2 square micrometers. The composite powders were tested via hot pressing processes (380¤ C/600 MPa/10 min). In order to determine the effect of addition of SiC reinforcement on the properties for the obtained sinters samples, hardness was studied at small loads by Vickers method. Addition of reinforcement had brought the desired effect of hardness increase in the samples with the SiC content. The in? uence of SiC on the processing and the properties of aluminium matrix powder was analyzed in details." @default.
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- W2007187969 date "2011-01-01" @default.
- W2007187969 modified "2023-10-17" @default.
- W2007187969 title "The Influence of SiC on the Properties of Aluminium Powder Obtained from Recycled Materials" @default.
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