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The 573 K low-cycle fatigue behavior of Zircaloy-2 in various metallurgical states has been studied. Reduction in area as measured in tension tests was found to be a good parameter in determining fatigue life. Holdtimes in tension of 1 h or less did not affect the fatigue life but one of 5 h reduced it. An atmosphere containing iodine reduces the fatigue life under the conditions tested by 40 percent.
fatigue (materials), zircaloys, nuclear reactors, fatigue life, fatigue tests, iodine
Research engineer, Chalk River Nuclear Laboratories, Atomic Energy of Canada, Ltd., Chalk River, Ont.