Creep of mechanically-alloyed NiAl containing 13 Vol % Mo or Mo2C dispersoids

A. Lakki*, D. C. Dunand

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Dispersion-strengthened nickel aluminide NiAl was synthesized by reactive mechanical alloying from elemental powders. The microstructure and creep properties of these materials was compared for two cases: (i) NiAl-Mo, where dispersoids are in the form of a ductile, metallic phase and (ii) NiAlMo2C, where the dispersoids are a brittle, ceramic phase. Also, the effect of annealing treatments which coarsened both matrix grains and dispersoids was investigated. Inhibited diffusional creep is identified as the rate-controlling creep mechanism.

Original languageEnglish (US)
JournalMaterials Research Society Symposium - Proceedings
Volume552
StatePublished - Dec 1 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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