چکیده مقاله
Functionally graded materials FGMs are characterized by the variation in composition and/or structure over volume, resulting in corresponding changes in their properties along specific directions In the present investigation the settling velocities of different sized SiC and Al 6061 powder particles in Poly Methyl Methacrylate PMMA dissolved in toluene were measured experimentally and the results exhibited a reasonably good agreement with those predicted via the unmodified Stokes law Then the same gravity sedimentation process was utilized for preparation of Al/SiC compacts by using different sized Al and SiC particles After burning out the binder, the samples were subjected to cold pressing, sintering, metallographic studies and hardness measurements The results confirmed that when the ratio of settling velocities of the constituent powders were in a specified range i e V SiC /V Al ≈ 2 6 3 0 , a smooth concentration gradient of SiC particles along the height of samples was created revealing the successful production of FGMs
کلیدواژهها
نویسندگان
M. Mivehchin
School of Metallurgy and Materials Engineering, University College of Engineering, University of Tehran
F. Akhlaghi
School of Metallurgy and Materials Engineering, University College of Engineering, University of Tehran
شیوه ارجاع
Mivehchin, M. and Akhlaghi, F.,1390,Fabrication of functionally graded Al6061/SiCP composite materials via gravity sedimentation method,12th Iranian Conference on Manufacturing Engineering (ICME 2010),Tehran
ارائهشده در
مجموعه مقالات دوازدهمین کنفرانس ملی مهندسی ساخت و تولید ایران6 دی 1390 · تهران