Wear-dependent specific coefficients in a mechanistic model for turning of nickel-based superalloy with ceramic tools

Abstract

Difficult to cut materials such as nickel and titanium alloys are used in the aeronautical industry, the former alloys due to its heat-resistant behavior and the latter for the low weight - high strength ratio. Ceramic tools made out alumina with reinforce SiC whiskers are a choice in turning for roughing and semifinishing workpiece stages. Wear rate is high in the machining of these alloys, and consequently cutting forces tends to increase along one operation.

Keywords

• inconel 718
• ceramics
• cutting coefficients
• time-dependent wear