Effect of Micro-Cracks in Coating on Performance of CVD Coated Carbide Cutting Tool

1997 ◽  
Vol 138-140 ◽  
pp. 245-262
Author(s):  
Sakae Katayama ◽  
Masayuki Hashimura
2017 ◽  
Vol 47 ◽  
pp. 11-16 ◽  
Author(s):  
Bilal Kursuncu ◽  
Halil Caliskan ◽  
Sevki Yilmaz Guven ◽  
Peter Panjan

The Inconel 718 superalloy is one of the most-used nickel based superalloys in the aerospace industry due to its superior mechanical properties, for instance, high thermal and chemical resistance, and high strength at elevated temperatures. However, the work hardening tendency, low thermal conductivity and high hardness of this superalloy cause early tool wear, leading to the material to be called as a hard-to-cut material. Therefore, deposition of a wear resistant hard coating on carbide cutting tools has a critical importance for longer tool life in milling operations of the Inconel 718 superalloy. In this study, carbide cutting tools were coated with multilayer nanocomposite TiAlSiN/TiSiN/TiAlN coating using the magnetron sputtering technique, and wear behavior of the coated tool was investigated during face milling of the Inconel 718 superalloy under dry conditions. Abrasive and adhesive wear mechanisms were founded as main failure mechanisms. The nanocomposite TiAlSiN/TiSiN/TiAlN coated carbide cutting tool gave better wear resistance, and thus it provided 1.7 times longer tool life and a smoother surface (Ra<0.18 μm) on the Inconel 718 material than the uncoated one.


2019 ◽  
Vol 973 ◽  
pp. 96-100
Author(s):  
Vladimir A. Solodkov ◽  
Sergey I. Kormilitsin ◽  
Aleksandr I. Kurchenko

In order to increase the working efficiency of coated-carbide cutting tool under interrupted cutting conditions it is most efficient to use abrasion resistant refractory coating and solid lubricants.


Sign in / Sign up

Export Citation Format

Share Document