Cutting Performance and Wear Mechanisms of an Al2O3-Based Micro-Nano-Composite Ceramic Tool

Yong Hui Zhou; Jun Zhao; Xing Ai

doi:10.4028/www.scientific.net/KEM.443.244

Paper Titles

Die Design in Fine-Piercing Process by Chamfering Cutting Edge
p.219

Optimisation of the Machining of Stellite 6 PTA Hardfacing Using Surface Roughness
p.227

Surfaces Machined by Micro End-Mills at Constant Chip Load
p.232

Design Optimization of Cutting Parameters in Turning 45Cr Steel Using Cermets Tool
p.238

Cutting Performance and Wear Mechanisms of an Al₂O₃-Based Micro-Nano-Composite Ceramic Tool
p.244

Dry Turning of Rotor Steel 26NiCrMoV145 Using Multilayer Coated Cemented Carbide Tools
p.250

Experimental Study on the Performance of WC-Co Inserts in Turning 4Cr13 Die Steel
p.256

Experimental Study on Cutting Characteristics for Buttress Thread Turning of 13%Cr Stainless Steel
p.262

Investigation of Cutting Forces and Vibration in High Speed Milling of Pocket Corner
p.268

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Cutting Performance and Wear Mechanisms of an Al₂O₃-Based Micro-Nano-Composite Ceramic Tool

Abstract:

An Al2O3-based composite ceramic cutting tool material reinforced with (W, Ti)C micro-particles and Al2O3 micro-nano-particles was fabricated by using hot-pressing technique, the composite was denoted as AWT. The cutting performance, failure modes and mechanisms of the AWT micro-nano-composite ceramic tool were investigated via continuous turning of hardened AISI 1045 steel in comparison with those of an Al2O3/(W, Ti)C micro-composite ceramic tool SG-4 and a cemented carbide tool YS8. Worn and fractured surfaces of the cutting tools were characterized by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The results of continuous turning revealed that tool lifetime of the AWT ceramic tool was higher than that of the SG-4 and YS8 tools at all the tested cutting speeds. The longer tool life of the AWT composite ceramic tool was attributed to its synergistic strengthening/toughening mechanisms induced by the (W, Ti)C micro-particles and Al2O3 nano-particles.