DISPERSION STRENGTHENED NICKEL-BASE ALLOYS. Final Report, March 1- December 31, 1963
Technical Report
·
OSTI ID:4034243
The dispersion strengthening of nickel-chromium alloy and Udimet-500 modified compositions was investigated with thorium oxide introduced by mechanical mixing or thermal decomposition techniques. Thermal decomposition of thorium nltrate onto the nickel-20 wt% chromium alloy powder produced a better degree of thorium oxide dispersion than mechanical mixing. The 100 hr rupture life stress of nickel-chromium alloy at 1800 deg F was increased from 1600 to 3400 psi with the addition of 5 vol% thoria. In addition, the effect of further cold deformation after extrusion on properties was investigated with 2.5 and 5 vol% thoria dispersions in nickel-chromium alloy. (auth)
- Research Organization:
- New England Materials Lab., Inc., Medford, Mass.
- NSA Number:
- NSA-18-018277
- OSTI ID:
- 4034243
- Report Number(s):
- AD-432420
- Country of Publication:
- United States
- Language:
- English
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