FINAL REPORT ON MISCIBILITY GAPS IN Nb-U AND Nb-U-Zr SYSTEMS Metadata

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Title

  • Main Title FINAL REPORT ON MISCIBILITY GAPS IN Nb-U AND Nb-U-Zr SYSTEMS

Publisher

  • Name: Fulmer Research Inst., Ltd., Stoke Poges, Bucks, England
    Place of Publication: United States

Date

  • Creation: 1959-01-01

Language

  • English

Description

  • Content Description: The miscibility gap in the U-Nb system has been established using metallographic and x-ray techniques. The monotectoid temperature is placed at 640 deg plus or minus 2 deg C and the composition limits at that temperature are 65 to 70 at.% Nb and 17.5 plus or minus 1 at.% Hb. The 700, 650, and 600 deg C isothermal sections of the U-Nb- Zr system have also been investigated. Each of the miscibility gaps present in the limiting binary sections was found to be closed by additions of the third element. At 700 deg C the U- Zr gap is closed by addition of less than 5 at.% Nb. The behavior of the Zr-Nb gap is less certain owing to the sluggish reactions close to this binary system but the gap appears to be closed by about 15 at.% U. The U-Nb gap has been studied in more detail and is closed by 14 at.% Zr. To a near approxiation the teniary U-Nb gap can be considered to be bounded by the composition lines 33 at.% U, 14 at.% Zr, and about 20 at.% Nb depending on temperature. A notable feature is that at Nb and Zr compositions approximately corresponding to a line of minimum lattice distortion, the gamma phase at 600 deg C bulges toward the U corner. As a result of the closure of the gaps the gamma phase is stable over a large area of the diagram at temperatures down to at least 600 deg C. (auth)
  • Physical Description: Medium: P; Size: Pages: 94

Subject

  • Keyword: Temperature
  • Keyword: Eutectics
  • Keyword: Uranium
  • Keyword: Zirconium Alloys
  • Keyword: Phase Diagrams
  • Keyword: High Temperature
  • Keyword: Niobium Alloys
  • Keyword: Metals, Ceramics And Materials
  • Keyword: Metallography
  • Keyword: Uranium Alloys
  • Keyword: Stability
  • Keyword: Zirconium
  • Keyword: Lattices
  • Keyword: Mixing
  • Keyword: X Radiation
  • Keyword: Additives
  • Keyword: Niobium

Source

  • Other Information: Orig. Receipt Date: 31-DEC-60

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: NP-8237
  • Report No.: R-126/4
  • Grant Number: 62558-(24)-1770
  • DOI: 10.2172/4207229
  • Office of Scientific & Technical Information Report Number: 4207229
  • Archival Resource Key: ark:/67531/metadc877724