Govender, GIvanchev, LBurger, HMulaba, AChikwanda, H2012-06-202012-06-202012-04Govender, G, Ivanchev, L, Burger, H, Mulaba, A and Chikwanda, H. 2012. Evaluation of HEBM Mechanical Alloying of Al2O3— 356/7075 Powder Mixture. Open Journal of Composite Materials, vol. 2(2), pp 48-532164-56122164-5655http://www.scirp.org/journal/PaperInformation.aspx?paperID=18807http://hdl.handle.net/10204/5926Copyright: 2012 Scientific Research PublishingParticle reinforced aluminium alloy metal matrix composites (MMC) have proven to be one of the advanced materials capable of replacing conventional structural alloys. However, the demand for such materials has been confined to high cost applications due to their complex processing. A preliminary mechanical alloying (MA) of metal powder with ce-ramic particulates by High Energy Ball Mill (HEBM) processing is a step of MMC manufacturing process. In this paper mechanical alloying of aluminium alloys A356 and 7075 powder with Al2O3 and SiC particulates using two types of HEBM was investigated. The effect of dispersed phase strengthening mechanism on three aluminium grade alloys was evaluated by micro hardness measurement. Microstructure investigation confirms the achieved strengthening results. It was established that by measuring hardness of alloyed aluminium particles with low load reliable information on the alloying effect can be achieved.enMechanical alloyingMetal matrix compositesMMCAlloysArticleGovender, G., Ivanchev, L., Burger, H., Mulaba, A., & Chikwanda, H. (2012). Evaluation of HEBM Mechanical Alloying of Al2O3— 356/7075 Powder Mixture. http://hdl.handle.net/10204/5926Govender, G, L Ivanchev, H Burger, A Mulaba, and H Chikwanda "Evaluation of HEBM Mechanical Alloying of Al2O3— 356/7075 Powder Mixture." (2012) http://hdl.handle.net/10204/5926Govender G, Ivanchev L, Burger H, Mulaba A, Chikwanda H. Evaluation of HEBM Mechanical Alloying of Al2O3— 356/7075 Powder Mixture. 2012; http://hdl.handle.net/10204/5926.TY - Article AU - Govender, G AU - Ivanchev, L AU - Burger, H AU - Mulaba, A AU - Chikwanda, H AB - Particle reinforced aluminium alloy metal matrix composites (MMC) have proven to be one of the advanced materials capable of replacing conventional structural alloys. However, the demand for such materials has been confined to high cost applications due to their complex processing. A preliminary mechanical alloying (MA) of metal powder with ce-ramic particulates by High Energy Ball Mill (HEBM) processing is a step of MMC manufacturing process. In this paper mechanical alloying of aluminium alloys A356 and 7075 powder with Al2O3 and SiC particulates using two types of HEBM was investigated. The effect of dispersed phase strengthening mechanism on three aluminium grade alloys was evaluated by micro hardness measurement. Microstructure investigation confirms the achieved strengthening results. It was established that by measuring hardness of alloyed aluminium particles with low load reliable information on the alloying effect can be achieved. DA - 2012-04 DB - ResearchSpace DP - CSIR KW - Mechanical alloying KW - Metal matrix composites KW - MMC KW - Alloys LK - https://researchspace.csir.co.za PY - 2012 SM - 2164-5612 SM - 2164-5655 T1 - Evaluation of HEBM Mechanical Alloying of Al2O3— 356/7075 Powder Mixture TI - Evaluation of HEBM Mechanical Alloying of Al2O3— 356/7075 Powder Mixture UR - http://hdl.handle.net/10204/5926 ER -