EFFECTS OF NEUTRON IRRADIATION ON MECHANICAL PROPERTIES OF FERRITIC STEELS AND IRONS

Author: Trudeau, L. P
Published: [Place of publication not identified] : [publisher not identified], 1959.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1959.
Physical Description: microopaque : positive ; 8 x 13 cm

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Summary

The effect of fast-neutron irradiation at 50 to 70 deg C on the mechanical properties of some ferritic steels and irons was investigated with particular emphasis on the correlation between the magnitude of irradiation damage and the composition and microstructure. Impact energy transition curves, and tensile-test results are reported for sub-sized specimens; the correlation between results for sub-sized samples and those for full sized samples is given for unirradiated material. U.S. Navy HY65 alloy (a nickel--molybdenum--vanadium- copper low-carbon steel) was examined in three conditions of heat-treatment; normalized and tempered, austempered and tempered, and quenched and tempered. The third condition was the least susceptible to irradiation damage. Samples of five ferrites (carbon contents of 0.013 to 0.024%) contuining 3.2% Ni, 1.5% Mn, 1.0% Cr, and 0.5% Mo have been irradiated for different times. After irradiation the brittle-ductile transition temperatures of these materials approached that of unalloyed ferrite. The increase in yield strength for a given irradiation was about 10% higher for nickel than for manganese ferrites; in turn, the value for the latter material was about 10% higher than for unalloyed and chromium ferrites. The tensile properties of the molybdenum ferrite were least affected by irradiation. (auth)

Report Numbers

A/CONF.15/P/190; AECL-600

Other Subject(s)

Collection

U.S. Atomic Energy Commission depository collection.

Note

NSA number: NSA-13-007045
OSTI Identifier 4257678
Research organization: Atomic Energy of Canada Ltd., Chalk River, Ont.
Research organization: International Nickel Co. of Canada, Ltd., Toronto.

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