Wear behavior of some cutting tool materials in hard turning of HSS

Si3N4/TiC nanocomposite cutting tool materials were fabricated by adding Si3N4 and Al2O3 nanocomposites with Al2O3 and Y2O3 as additives. The microstructures of materials were analyzed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and then wear resistance of Si3N4/TiC nanocomposite cutting tool materials was studied when machining cast iron and quenched steel in continuous dry turning experiments. Micrographs of the worn tools materials were observed with SEM. Results showed that TiC nanoparticles distribute in the matrix grains and lead to the crack deflection as well as crack pinning. Due to TiC nanoparticles and β-Si3N4 quasiwhiskers, the crack trajectories exhibited crack deflection, rod-like grain bridging and pull-out. Wear mode of Si3N4/TiC inserts is mainly abrasive wear with slighter adhesive wear when machining cast iron. The dominant wear patterns during the cutting of quenched steel were adhesion, abrasion, as well as oxidation and diffusion under high temperature.

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Friction and Wear of Typical Tool Material at Elevated Temperature

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.199-200.646 ◽

2011 ◽

Vol 199-200 ◽

pp. 646-650 ◽

Cited By ~ 1

Author(s):

Hui Zhang ◽

Jian Xin Deng ◽

Ze Wu ◽

Xing Ai ◽

Jun Zhao

Keyword(s):

Friction Coefficient ◽

Friction And Wear ◽

Cutting Tool ◽

Wear Behavior ◽

Tool Material ◽

Cemented Carbide ◽

Friction And Wear Behavior ◽

Tool Materials ◽

Worn Surface ◽

Cutting Tool Materials

The friction and wear behavior of cutting tool materials keeps an issue. In this study, an high temperature tribometre (UMT-2) was used to investigated the tribology properties and mechanism of two kinds of typical cutting tool materials. Commonly used cemented carbide (ZU5) and ceramic (AT) were chosen. The characteristics as to wear rate, friction coefficient and worn surface were studied. From the results, we found that the ceramic had better wear resistance than the cemented carbide. The friction coefficient of cemented carbide decreased with the increase of ambient temperature while the ceramic exhibited an inverse tendency. Finally, the probable wear mechanism was discussed.

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Roughness Improvement in Hard Turning when Changing Cutting Parameters and Using Differently Shaped Ceramic Tools

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.474.345 ◽

2014 ◽

Vol 474 ◽

pp. 345-350

Author(s):

Michaela Samardžiová ◽

Miroslav Neslušan

Keyword(s):

Hard Turning ◽

Cutting Tool ◽

Cutting Parameters ◽

Hardened Steel ◽

Rockwell Hardness ◽

Tool Materials ◽

Ceramic Tools ◽

Mixed Ceramics ◽

Cutting Tool Materials ◽

Cutting Speeds

This article deals with hard turning using wiper and conventional geometry of cutting tool. The aim of this paper is to compare surface roughness when using different feeds and different cutting speeds when turning with different cutting tool ́s geometries. For the experimental research was used hardened steel 100Cr6 with Rockwell hardness 62 HRC. There is a possibility to use two different cutting tool materials for finish machining of hardened steels with hardness 45 65 HRC: PCBN and mixed ceramics. Aluminum oxide plus TiC was used in this experiment.

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Hard Turning Cutting Tool Materials used in Automotive and Bearing Manufacturing Applications – A review

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/814/1/012005 ◽

2020 ◽

Vol 814 ◽

pp. 012005

Author(s):

Debabrata Samantaraya ◽

Sanjay Lakade

Keyword(s):

Hard Turning ◽

Cutting Tool ◽

Tool Materials ◽

Manufacturing Applications ◽

Materials Used ◽

Cutting Tool Materials

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On the Wear of Carbide and Cermet Tools in Machining of Compacted Graphite Iron (CGI)

ASME/STLE 2007 International Joint Tribology Conference, Parts A and B ◽

10.1115/ijtc2007-44367 ◽

2007 ◽

Cited By ~ 1

Author(s):

K. Philip Varghese ◽

A. K. Balaji

Keyword(s):

Cutting Tool ◽

Wear Behavior ◽

Cutting Tools ◽

Substrate Material ◽

Tribological Performance ◽

Compacted Graphite Iron ◽

Compacted Graphite ◽

Tool Materials ◽

Cutting Tool Materials ◽

Wear Tests

This work presents an extension of a previous investigation [1] conducted on gaining an understanding of the critical tribological issues encountered in the machining of compacted graphite iron (CGI) using different cutting tool materials. As part of this study, wear tests were conducted on flat-faced coated and uncoated carbide tools and coated and uncoated cermet tools. The machining tests were conducted under dry condition. Performance assessment of the cutting tools was made using a comparative analysis of the measured cutting forces and post machining scanning electron microscopy (SEM) of used tools. The results reveal the interaction of selected cutting conditions and tool substrate material and coatings on the tribological performance and wear behavior of tools during CGI machining.

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Thermodynamic, Tribological and Chemical Interdiffusion Study of Ultra-Hard Ceramic AlMgB14 in the Machining of Aerospace Alloys

Manufacturing ◽

10.1115/imece2003-42374 ◽

2003 ◽

Cited By ~ 3

Author(s):

Vikram Bedekar ◽

Deepak G. Bhat ◽

Stephen A. Batzer ◽

Larry Walker ◽

L. F. Allard

Keyword(s):

Titanium Alloys ◽

Cutting Tool ◽

Wear Behavior ◽

Chemical Reactivity ◽

Cutting Tools ◽

Tool Material ◽

Work Piece ◽

Tool Materials ◽

Aerospace Alloys ◽

Cutting Tool Materials

There has been a growing concern about the reactivity at the tool/work-piece interface during machining, leading to lower tool life. The problem is more severe especially in the case of aerospace alloys such as Ti-6Al-4V and stainless steels. Recently, a new ultra hard ceramic material, AlMgB14, was reported with properties that show considerable promise as a cutting tool material for machining titanium alloys [1]. This paper investigates the chemical wear behavior of AlMgB14, in the machining of aerospace alloys. The mechanical properties of AlMgB14 are compared with leading cutting tool materials (WC-Co, Al2O3SiCw-TiC and Al2O3-TiC), which are used extensively in machining titanium and ferrous alloys. Materials characterization of candidate tool materials shows that AlMgB14 exhibits superior hardness, fracture toughness and abrasive wear resistance as compared to the other cutting tool materials. We also report on a study of chemical reactivity of tool materials (AlMgB14 and WC-6%Co) in machining various alloys such as Ti-6Al-4V and Fe-18Ni-8Cr. The chemical reactivity was investigated using diffusion tests conducted in vacuum at 1000°C for 120 hrs. Transverse sections of couples were characterized using electron probe micro analysis (EPMA), to determine the extent of diffusion zones. The results show that AlMgB14 shows considerably less reactivity with titanium alloys when compared with cemented carbide cutting tools. It was also observed that the boride reacts significantly with the iron based Fe-18Ni-8Cr alloy. The paper also reports on the evaluation of the free energy of formation of AlMgB14 using the thermochemical software program FactSage™.

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