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Dispersoids in Intermetallic Alloys: a Review

  • Carl C. Koch (a1)

Abstract

The existing work on structure and mechanical behavior of intermetallic alloys containing dispersed second phases — dispersoids — is reviewed. The dispersoids considered in the review are those given the conventional definition as inert, stable, insoluble phases in the matrix, such as oxides. The only detailed mechanistic studies of dispersoids in intermetallics have been carried out on the model material Cu3Au, and these did not include elevated temperature, eg. creep, mechanical behavior. A number of investigations on dispersoids in the potentially important elevated temperature materials — the aluminides — are reviewed. The materials discussed include FeAI, Fe3AI, NiAI, Ni3AI, and Ti3Al. Many of these studies are preliminary in nature and much more research anddevelopment is needed to allow for the design of intermetallic-dispersoid materials with improved fabricability and elevated temperature performance.

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Dispersoids in Intermetallic Alloys: a Review

  • Carl C. Koch (a1)

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