Development of Low Machining Cost Materials by Using Aluminum Borate
6061 aluminum alloy composite reinforced with α-alumina and aluminum borate is fabricated by casting method. The above mentioned composite has been compared to a similar composite without aluminum borate reinforcement for their machinability. The aluminum borate filler was controlled up to (2.5, 5.0 and 30vol %) on the surface of α-alumina. The reaction zone between alumina and the matrix in both the systems are analyzed with the help of TEM micrographs as well as X-ray diffraction profiles. At the reaction zone between alumina and the aluminum alloys, some spinel-like compounds (MgAl2O4) are identified. Finally, machinability was analyzed with the single point tool machining.
T. Ohji, T. Sekino and K. Niihara
H. Takano et al., "Development of Low Machining Cost Materials by Using Aluminum Borate", Key Engineering Materials, Vols. 317-318, pp. 335-338, 2006