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Journal of Materials Science

, Volume 25, Issue 5, pp 2527–2531 | Cite as

Effect of machining on fracture toughness of corundum

  • Farrokh Farzin-Nia
  • Terry Sterrett
  • Ron Sirney
Article

Abstract

Different machining processes such as ultrasonic machining and grinding by a diamond wheel produce varying degrees of surface damage. The amount of surface damage appeared to be related to the type of machining process. However, the degree of surface damage could not be related to the surface roughness for different machining processes. The surface damage created by the machining process can be fully or partially recovered by heat treatment subsequent to machining. The degree of recovery by heat treatment seems to be dependent on the severity of the surface damage during the machining process. Observation of the surface microcracks and determination of the fracture toughness of the material after machining or heat treatment indicated recovery of some of the microcracks during the heat treatment.

Keywords

Polymer Heat Treatment Surface Roughness Fracture Toughness Machine Process 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd. 1990

Authors and Affiliations

  • Farrokh Farzin-Nia
    • 1
  • Terry Sterrett
    • 1
  • Ron Sirney
    • 1
  1. 1.Materials Engineering DepartmentOrmco CorporationGlendoraUSA

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