Abstract: In this investigation, AA6061 milled particle size was fabricated by milling machine plus compacted by hydraulic press in room temperature. Finally, sintering in the temperature range of 552 OC. The samples were compacted by 9 tons. The holding time was 20 mins. Three groups of specimens were chosen (without binder, blended with zinc stearate binder and blended with polyethylene glycol 400 binder). Each group has tested by compression test , microhardness test and microstructure. The mechanical properties of the three groups depend on the type of binder. So, it is useful first to present and discuss the results of microstructure to understand the mechanical properties. In this study, the compression strength and microhardness values were increased with the using of zinc stearate binder due to the bonding between particles was stronger, in addition, the pores amount was decreased. On the other hand, the specimen (without binder) was decreased the compression strength and microhardness due to the particle size cannot slip well, it leads to more pores and the bonding was not stronge. An addition, polyethylene glycol has a value lower than the previous binder and better than without binder specimen.
Keywords: Binder, milling process, Micro-hardness, powder metallurgy, AA6061.
Title: Compression Strength and Microhardness of Recycling Milled Aluminium (AA6061) for Various Binder
Author: Ahmed Sahib Mahdi, Mohd Sukri Mustapa, Mohd Amri lajis, Mohd warikh abd Rashid
International Journal of Mechanical and Industrial Technology
ISSN 2348-7593 (Online)
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