Machining of High Strength Light Weight Alloys for Engine Applications

The use of high strength materials with low density in engines and vehicles gains more and more intention for the reduction of weight in moving parts. Currently, γ-titaniumaluminides as well as aluminum-metal-matrix-composites are considered as appropriate materials for this purpose. In spite of their outstanding material properties, problems occur when machining operations are carried out. These problems emerge from the high strength and the abrasive reinforcing particles. This paper presents research on the machining of a γ-TiAl-alloy as well as an Al-MMC-alloy. Investigations of the turning process were focused on ascertaining conditions for an economical and a high-quality machining process.