AN INVESTIGATION OF VARIOUS PROPERTIES OF NiAl
FIRTH STERLING INC YONKERS NY AMERICANELECTRO METAL DIV
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A modified composition NiAl 5 Ni was produced from which bodies were successfully fabricated by powder metallurgical techniques. Properly hot- pressed bars of the NiAl 5 Ni composition showed strengths in modulus of repture as high as 144,000 psi at room temperature and 68,000 psi at 980C. The air oxidation resistance of the modified NiAl 5 Ni composition was excellent up to 1095 C weight gains of the order of 1.25 mgsq cm were exhibited after 300 hr of exposure. Heat-shock properties were considered satisfactory on the basis of both NACA tests and performance in the Air Force heat-shock apparatus.
- Metallurgy and Metallography