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Pendulum impact resistance of tungsten fiber/metal matrix composites.The impact properties of copper, copper-10 nickel, and a superalloy matrix reinforced with tungsten fibers were studied. In most cases the following increased composite impact strength: increased fiber or matrix toughness, decreased fiber-matrix reaction, increased test temperature, hot working and heat treatment. Notch sensitivity was reduced by increasing fiber or matrix toughness. The effect of fiber content depended on the relative toughness of the fibers and matrix. Above 530 K a 60 volume per cent superalloy matrix composite had a greater impact strength than a turbine blade superalloy, whereas below 530 K a hot worked 56 volume per cent composite had a greater impact strength than the superalloy.
Document ID
19720041807
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Winsa, E. A.
Petrasek, D. W.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1972
Subject Category
Materials, Metallic
Meeting Information
Meeting: Composite materials: Testing and design; Second Conference
Location: Anaheim, CA
Start Date: April 20, 1971
End Date: April 22, 1971
Accession Number
72A25473
Distribution Limits
Public
Copyright
Other

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