TiAl - a new high temperature material for turbocharger rotors
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TiAl aluminides represent a new class of heavy-duty construction materials for application in the temperature range between 500 and 800degreesC. Considering a significant breakthrough in the development of TiAl aluminides in the last few years, this material is on the verge of commercial application in the automotive and aerospace industries. A prototype of a TiAl-based turbocharger rotor was produced by a precision casting process in a centrifugal vacuum furnace applying a GT GT selfsupporting LT LT ceramic shell mold. Optical microscopy, X-ray diffraction technique, hardness measurements and unaxial tensile tests were performed for the characterization of microstructure and mechanical proper-ties.
Keywords:a(2)/g microstructure / g TiAl-based alloys / investment casting / strength
Source:Materials Science Forum, 2004, 453-454, 169-174
- Progress in Advanced Materials and Processes, 5th Conference of the Yugoslav-Materials-Research-Society (Yu-MRS 2003), Sep 15-19, 2003, Herceg Novi, Yugoslavia