Computer Science
Scientific paper
Feb 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mta....11..307j&link_type=abstract
Metallurgical Transactions A, Volume 11, Issue 2, pp.307-317
Computer Science
1
Scientific paper
The Ni,10Cr,5Al-TaC aligned eutectic has been heat treated subsequent to solidification to produce several microstructural conditions. High cycle fatigue tests have been conducted at 25 and 825°C, while creep tests were performed at 825 and 950°C. Experimental variables in the fatigue tests were stress level, test frequency, and environment. Post solidification heat treatments caused substantial improvements in fatigue properties at 825°C, but had little effect at room temperature. Elevated temperature fatigue lives were substantially reduced at low test frequencies in vacuum, accompanied by a shift from external to internal crack nucleation sites. Dislocation substructures produced in high temperature fatigue tests resembled those of creep specimens.
Johnson William A.
Stoloff N. S.
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