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Stress-rupture strength and microstructural stability of tungsten-hafnium-carbon-wire reinforced superalloy composites

Author
Petrasek, D. W.
Published
Oct 1, 1974.
Physical Description
1 electronic document
Additional Creators
Signorelli, R. A.
Online Version

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Unclassified, Unlimited, Publicly available.
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Summary
Tungsten-hafnium-carbon - superalloy composites were found to be potentially useful for turbine blade applications on the basis of stress-rupture strength. The 100- and 1000-hr rupture strengths calculated for 70 vol. % fiber composites based on test data at 1090C (2000F) were 420 and 280 MN/m2 (61,000 and 41,000 psi, respectively). The investigation indicated that, with better quality fibers, composites having 100- and 1000-hr rupture strengths of 570 and 370 MN/m2 (82,000 and 54,000 psi, respectively), may be obtained. Metallographic studies indicated sufficient fiber-matrix compatibility for 1000 hr or more at 1090C (2000F).
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19740026826.
Accession ID: 74N34939.
E-7931.
NASA-TN-D-7773.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15742570