Fabrication and Mechanical Properties of Al2O3 Reinforced NiAl Composites

Chii Shyang Hwang, Dong Lin Coo

Research output: Contribution to journalConference articlepeer-review

Abstract

Al2O3 reinforced NiAl composites can show better mechanical properties than monolithic NiAl. For enhancing the properties of NiAl/Al2O3 composites NiAl powders were oxidized and/or ball milled to form Al2O3 into NiAl matrix. The as-received and oxidized/ball milled NiAl powders were studied to determine the effects of oxidation and ball milling. Al2O3 particles are dispersed in the grain boundaries and within the NiAl grains of hot-pressed NiAl/A2O3 composites. As the milling time and the oxidation temperature of NiAl powder increased, α- Al2O 3 contents increase, and fracture mode of the composite transforms from intergranular to transgranular cleavage which accounts for the enhancement of mechanical properties of NiAl/Al2O3 composites.

Original languageEnglish
Pages (from-to)223-226
Number of pages4
JournalKey Engineering Materials
Volume249
Publication statusPublished - 2003 Jan 1
EventComposite Materials III: Proceedings of the 3rd China Cross-Strait Conference on Composite Materials - Wuhan, China
Duration: 2003 May 72003 May 12

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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