THE EFFECT OF FABRICATION VARIABLES ON THE STRUCTURE AND PROPERTIES OF UO$sub 2$-STAINLESS STEEL DISPERSION FUEL PLATES

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Based on the results of detailed fabrication studies, an evaluation of the effects of varying the type and size of UO/sub 2/ particles, the type and size of stainless steel matrix powders, blending procedures, compacting pressures, sintering times, temperatures, and atmospheres, roll-clading temperatures and reduction rates, total cold reduction, and heat-treating times and temperatures was made for UO/sub 2/stainless steel dispersion fuel elements. Transverse tensile tests, creep-rupture tests, metallographic examination, radiography, density measurements, and x-raydiffraction studies were used to evaluate the structure and properties of the fuel elements. From these studies a reference fabrication procedure for GCRE fuel elements was ... continued below

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Pages: 76

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Paprocki, S.J.; Keller, D.L. & Cunningham, G.W. February 18, 1959.

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Based on the results of detailed fabrication studies, an evaluation of the effects of varying the type and size of UO/sub 2/ particles, the type and size of stainless steel matrix powders, blending procedures, compacting pressures, sintering times, temperatures, and atmospheres, roll-clading temperatures and reduction rates, total cold reduction, and heat-treating times and temperatures was made for UO/sub 2/stainless steel dispersion fuel elements. Transverse tensile tests, creep-rupture tests, metallographic examination, radiography, density measurements, and x-raydiffraction studies were used to evaluate the structure and properties of the fuel elements. From these studies a reference fabrication procedure for GCRE fuel elements was established. The fuel element core contains minus 100 plus 200-mesh hydrothermal UO/sub 2/ dispersed in an 18-14-2.5 alloy matrix prepared from minus 325-mesh elemental iron, chromium, nickel, and molybdenum powders. Commercial Type 318 stainless steel is used for cladding. Core compacts are sintered in steps to 2300 deg F after cold compacting at 15 tsi. Evacuated picture-frame packs are hot rolled from a hydrogen muffle at 2200 deg F with a 40% reduction in thickness on the first pass and a 20% reduction in thickness on remaining passes. After annealing at 2300 deg F, the fuel elements are given a light pickle and cold reduced 15 to 20% in thickness to give a total reduction of 8 to 1. The final treatment consists of a flat anneal at 2050 deg F. (auth)

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Pages: 76

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  • Other Information: Decl. Dec. 3, 1959. Orig. Receipt Date: 31-DEC-60

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  • Report No.: BMI-1322
  • Grant Number: W-7405-ENG-92
  • DOI: 10.2172/4185452 | External Link
  • Office of Scientific & Technical Information Report Number: 4185452
  • Archival Resource Key: ark:/67531/metadc867662

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  • February 18, 1959

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  • Sept. 16, 2016, 12:32 a.m.

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  • Nov. 18, 2016, 7:18 p.m.

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Paprocki, S.J.; Keller, D.L. & Cunningham, G.W. THE EFFECT OF FABRICATION VARIABLES ON THE STRUCTURE AND PROPERTIES OF UO$sub 2$-STAINLESS STEEL DISPERSION FUEL PLATES, report, February 18, 1959; Columbus, Ohio. (digital.library.unt.edu/ark:/67531/metadc867662/: accessed June 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.