Irradiation Behavior of Zircaloy-2 Clad Thorium-uranium-zirconium Fuel Elements
Author: J. W. Goffard
Publisher:
Published: 1967
Total Pages: 29
ISBN-13:
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Author: J. W. Goffard
Publisher:
Published: 1967
Total Pages: 29
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Published: 1967
Total Pages:
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DOWNLOAD EBOOKAuthor: J. H. Kittel
Publisher:
Published: 1959
Total Pages: 40
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DOWNLOAD EBOOKThe fuel material specified for the Mark III core of EBR-I was uranium-2 wt. % zirconium alloy coextruded with Zircaloy-2 cladding. From previous work on swaged or rolled uranium-2 wt% zirconium alloy, it was anticipated that the extruded alloy would be dimensionally unstable under irradiation unless stabilized by suitable heat treatment. In order to determine an effective heat treatment, irradiation studies were made on both clad and unclad extruded uranium-2 wt.% zirconium alloy specimens at irradiation temperature estimated at 200 to 750 deg C. The irradiation specimens included material with three different heat treatments, selected on the basis of previous studies, and material transient melted in its cladding. For unclad specimens, it was found that the irradiation temperature strongly influenced the various irradiation growth rates resulting from different heat treatments. Growth rates of the clad specimens were relatively insensitive to either irradiation temperature or prior heat treatment. An exception was the transient-melted material, which shortened under irradiation. The cladding had only limited ability to restrain the swelling rates of specimens irradiated at the more elevated temperatures. Clad transient-melted material was found to be most resistant to high-temperature swelling under irradiation. The results of the present study combined with observations in earlier investigations resulted in a recommendation that the reference heat treatment for the core consist of gamma solution at 800 deg C followed by isothermal transformation at 690 deg C.
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Publisher:
Published: 1970
Total Pages: 1338
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DOWNLOAD EBOOKAuthor: A. L. Geary
Publisher:
Published: 1960
Total Pages: 28
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DOWNLOAD EBOOKAuthor: R. C. Daniel
Publisher:
Published: 1962
Total Pages: 294
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DOWNLOAD EBOOKAuthor: Albert R. Kaufmann
Publisher:
Published: 1962
Total Pages: 760
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DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1976
Total Pages: 680
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DOWNLOAD EBOOKAuthor: William L. R. Rice
Publisher:
Published: 1964
Total Pages: 308
ISBN-13:
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