Paper
Wear Behavior of the Pair Superalloy FXS-414 and Cutting Tool-Carbide Coated TiN
- Authors:
- Sebhi Amar; Douib Nadir
- Abstract
- The machining of superalloy parts remains a dark area in mechanical manufacturing. It is limited in particular areas such as gas turbines, rocket engines, space vessels, nuclear reactors and pumps. Friction theory still seems to be in arrears with respect to the practice, although friction is implicated in many scientific disciplines. Industrials have been interested for many years in the development and characterization of materials in order to provide wear-resistant mechanical parts. In this context, study of the tribological behaviour of the cobalt based superalloy FXS-414 standard 9001F against the metallic carbide coated inserts TiN provides important information in the case of the turbine blades industry. The three main mechanisms responsible for the wear of the cutting tools are adhesion, abrasion and diffusion. The life of the cutting tool is primarily related to the development of two types of wear: flank wear and crater wear. This wear phenomenon appears to be scalable. It is developed during cutting, which impairs the quality of machining and the productivity, and it may even lead to the destruction of the tool in the case of excessive wear. The durability of machine tools often depends on tribological characteristics of the couple cutting tool material / workpiece. The characterization of superalloys is late compared to other materials. The choice of the cutting tool for machining superalloys is not really invested because of the high cost of machining means. It has been shown that the coating is the most influential parameter, followed by the sliding velocity and feed rate.
- Keywords
- Cutting Speed; Crater Wear; Drilling; Flank Wear; Friction; Tribology; Wear
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