IRRADIATION EFFECTS ON REACTOR STRUCTURAL MATERIALS.
Quarterly progress rept. 1 Nov 67-31 Jan 68,
NAVAL RESEARCH LAB WASHINGTON D C
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The research program of the NRL Metallurgy Division, Reactor Materials Branch, is devoted to the determination of the effects of nuclear radiation upon the properties of structural materials. The overall program is sponsored by the Office of Naval Research, the Naval Ship Systems Command, the U. S. Atomic Energy Commission, and the Army Nuclear Power Program. Since research findings which apply to the objectives of one sponsoring agency are also of interest to the others, the overall program progress is reported herein. This report, covering research for the period 1 November 1967 - 31 January 1968, includes the following 1 an evaluation of copper, vanadium, and nitrogen content as variables in radiation embrittlement sensitivity of A302-B steel, 2 the thermal aging response of A302-B plates from a laboratory split heat modified with sulfur and phosphorus additions, 3 an evaluation of the effect of aluminum and nitrogen additions on radiation embrittlement sensitivity of Ni-Cr-Mo steel, 4 the notch ductility characteristics of experimental Cr-Ni-Mo precipitation hardening stainless steel after 250F irradiation, and 5 an assessment of embrittlement relief accomplished through in-place annealing the SM-1A reactor pressure vessel. Author
- Metallurgy and Metallography
- Fission Reactor Materials