Wear Mechanism of Multi-layer AlCrWN/AlCrWSiN Coatings on Cemented Carbide Tool Prepared by Arc Ion Plating in Dry Cutting of Sintered Steel

Tadahiro Wada,Hiroyuki Hanyu,C Chastre,P Mendonça

doi:10.1051/matecconf/201927802001

Tadahiro Wada, Hiroyuki Hanyu + Show 2 more

Open Access

https://doi.org/10.1051/matecconf/201927802001

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Abstract

To clarify the effectiveness of multi-layer AlCrWN/AlCrWSiN-coated cemented carbide tools, the wear progress was investigated in cutting sintered steel using three types of coated tool. Tool I had a mono-layer (Al60,Cr25,W15)N-coating film, Tool II had a mono-layer (Al53,Cr23,W14,Si10)N-coating film and Tool III had a multi-layer (Al60,Cr25,W15)N/(Al53,Cr23,W14,Si10)N-coating film. The following results were obtained: (1) The main tool failure of the three types of coated tools was flank wear within a maximum value of flank wear width of 0.2 mm. (2) The wear progress of Type III, which was a multi-layer coating system, was the slowest in cutting sintered steel.

Highlights

A machine part having a complicated shape can be accurately mass-produced by powder metallurgy, while a sintered material can be produced because it has a large degree of freedom in terms of material design
To clarify the effectiveness of the multi-layer AlCrWN/AlCrWSiN-coated cemented carbide tool, the wear progress was investigated in cutting sintered steel using three types of coated tools
Hardness and scratch strength of various coating films formed on the surface of the substrate, which was a WC-Co cemented carbide ISO K10 by the arc ion plating process

Summary

Introduction

A machine part having a complicated shape can be accurately mass-produced by powder metallurgy, while a sintered material can be produced because it has a large degree of freedom in terms of material design. For dimensional accuracy, it is often necessary for sintered steel machine parts to be machined by a mass production metal removal process. In order to improve both the scratch strength and the micro-hardness of the AlCrN coating film, cathode material of an Al-Cr-W target was used in adding tungsten (W) to the cathode material of the Al-Cr target. Yu-ping Feng et al reported that the hardness of AlCrSiWN coating film is higher than that of AlCrN at temperatures below 700 degrees Celsius [3]

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