Hybrid alumina composites for cutting tool inserts: Material design and development

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


A successful approach to the development of reinforced materials for enhanced cutting tool inserts requires the formulation and application of innovative concepts at each step of material design development. In this paper, reinforced ceramic-based cutting tools with enhanced thermal and structural properties are developed for high-speed machining applications using a computational approach. A mean-field homogenization, effective medium approximation and J-integral based fracture toughness evaluation using an in-house code are used for predicting the effective structural and thermal properties for tool inserts as a function of reinforcement type, volume fraction, particle size and interface between matrix and reinforcement. Initially, several potential reinforcements are selected at the material design phase. SiC, TiB2, cBN and TiC were all found to be suitable candidates when reinforced into an alumina matrix as both single and hybrid inclusions for the enhancement of thermal and structural properties. For validation purposes, alumina-cubic boron nitride-silicon carbide composites are developed using Spark Plasma Sintering as hybrid systems, which are in line with the designed range of volume fraction and reinforcement particle size. Structural and thermal properties such as elastic modulus, fracture toughness and thermal conductivity are measured to complement the computational material design model.

Original languageEnglish
Title of host publicationMaterials
Subtitle of host publicationGenetics to Structures
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791852170
StatePublished - 2018

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)

Bibliographical note

Publisher Copyright:
Copyright © 2018 ASME

ASJC Scopus subject areas

  • Mechanical Engineering


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