TY - JOUR ID - 71782 TI - Structural Evolution of Al-20% (wt) Al2O3 System during Ball Milling Stages JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - Kazemzadeh, A. AU - Rahimipour, M. R. AU - Salahi, E. AU - Yazdani, R. AU - Razavi Tousi, Seyed Salman - AU - Razavi, Mansour AD - Semiconductors Department, Materials and Energy Research Center AD - Materials Engineering, Merc AD - Department of Engineering, Materilas and Energy Research Cenyer (MERC) P.O.B AD - Materials Engineering, MERC Y1 - 2009 PY - 2009 VL - 22 IS - 2 SP - 169 EP - 178 KW - metal KW - Matrix Composites KW - Nano KW - Structured Materials KW - Steady state DO - N2 - Production of nanostructured aluminum matrix composite powder by high energy ball milling is investigated. Scanning electron microscopy analysis as well as the tap and green density measurements were used to optimize the milling time needed for the completion of the mechanical milling process. Also, we studied the particles morphology and size distribution change with milling time and its correlation with pressability and tap density. SEM showed that distribution of alumina particles in the Al matrix reaches a full homogeneity after the steady state. This would increase the hardness of powder due to a nano-structured matrix and oxide dispersion strengthening. UR - https://www.ije.ir/article_71782.html L1 - https://www.ije.ir/article_71782_e9488b014a1d523fbdd4e4e3f74db0b0.pdf ER -