Impact testing of particle reinforced composite hardmetals

E. M. Byrne, Ivica Smid

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Difficult-to-machine materials rely on dependable cutting tools that have long service lifetimes. Tough coated hard particle based hardmetals are novel materials that make exceptional cutting tools. This is a hard particle reinforced composite hardmetal which has many advantages over conventional WC-Co cutting tools that have been favored by industry for over 80 years. Microstructural evaluations of press and sinter and hot-pressed parts show that either technique is capable of producing dense, high quality, and defect free parts. Understanding the composite microstructure helps in understanding the effects its microstructure has on fracture. Instrumented impact testing was used to show that composite hardmetals have an impact toughness which exceeds that of WC-Co of equal cobalt content by 26% due to complex crack interactions with the microstructure. The fracture toughening mechanism of crack deflection around core particles gives these composites additional toughness.

Original languageEnglish (US)
Title of host publicationMaterials Science and Technology Conference and Exhibition 2010, MS and T'10
Pages803-808
Number of pages6
Publication statusPublished - Dec 1 2010
EventMaterials Science and Technology Conference and Exhibition 2010, MS and T'10 - Houston, TX, United States
Duration: Oct 17 2010Oct 21 2010

Publication series

NameMaterials Science and Technology Conference and Exhibition 2010, MS and T'10
Volume2

Other

OtherMaterials Science and Technology Conference and Exhibition 2010, MS and T'10
CountryUnited States
CityHouston, TX
Period10/17/1010/21/10

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All Science Journal Classification (ASJC) codes

  • Materials Science (miscellaneous)

Cite this

Byrne, E. M., & Smid, I. (2010). Impact testing of particle reinforced composite hardmetals. In Materials Science and Technology Conference and Exhibition 2010, MS and T'10 (pp. 803-808). (Materials Science and Technology Conference and Exhibition 2010, MS and T'10; Vol. 2).