Powder metallurgy; aluminium alloys; mixing time; compacting pressure. Powder metallurgy; aluminium alloys; mixing time; compacting pressure.
1Department of Metallurgical Engineering, Govt. College of Engineering Pune 411005, India
2Aluminium Sintered Products Pvt. Ltd., Chakan, Pune, India
Adv. Mater. Lett., 2013, 4 (3), pp 235-240
Publication Date (Web): Jan 21, 2013
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Aluminium powder metallurgy is attracting attention of many researchers for making near net shape components by replacing conventional process of liquid metallurgy. In the present work, sintering response of a 2xxx series aluminium powder premix, containing 4.5Cu-1Si-0.8Mg (by wt %) blended without any lubricant in a mixer with a ball to powder ratio of 10:1 (by wt) has been studied. The higher mixing time of 6 hours and compacting pressure of 450 MPa gave 90% theoretical sintered density and hardness of 91 HRH with uniform distribution of alloying elements and optimal dimensional growth.
Powder metallurgy, aluminium alloys, mixing time, compacting pressure.