Some Metallurgical Aspects of Phase Transformation Mechanism in Uranium-Ruthenium Alloys

  • A. A. Abou-Zahra
  • P. Blanchard
  • F. H. Hammad


The effect of ruthenium on the transformation temperatures and mechanism in U-Ru alloys having Ru content ranging from 0.05–0.10 at.% have been investigated using dilatometry and differential thermal analysis. Structural changes were also followed by metallographies X-ray and electron microscopic techniques. It was found that the addition of Ru lowers the transformation temperatures in uranium. The degree of lowering increases as the Ru content increases. Dilatometry and differential thermal analysis for all compositions showed the appearance of two-phase transformations except for the U-3 at.% Ru alloy which exhibited three apparent phase transformations during cooling. A mechanism for such types of transformations was proposed.


Differential Thermal Analysis Transformation Temperature Natural Light Reference Specimen Electron Beam Melting 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    J.I. Bramman, R.M. Sharpe, D. Thom, G. Yates, J. Nucl. Mat. 25 201 (1968).CrossRefGoogle Scholar
  2. 2.
    L.J. Koch, Nucleonics 16 68 (1958).Google Scholar
  3. 3.
    F.G. Foote, The Industrial Challenge of Nuclear Energy II, Organization for European Economic Cooperation, Paris (1958) 123.Google Scholar
  4. 4.
    L.R. Kelman, TID-7546, Fuel Element Conference, Paris (Nov. 1957) 751.Google Scholar
  5. 5.
    “Nouveau Traite de Chimie Minerale,”sous la direction de Paul Pascal, Vol. XV, Ed. Masson et Cie, Paris (1967).Google Scholar
  6. 6.
    R.F. Hills, B.W. Howiett, B.R. Butcher, D. Stewart, AERE-R-4722 (1964).Google Scholar
  7. 7.
    A.A. Abou-Zahra, F.H. Hammad, “Metallography of Uranium Alloys,” AREAEE-Report (in press).Google Scholar
  8. 8.
    R.T. Ratcliffe, Brit. J. Appl. Phys. 16 1193 (1965).CrossRefGoogle Scholar
  9. 9.
    J.J. Park, J. Res. Nat. Bur. Stand., Phys. & Chem. 72A (1968).Google Scholar
  10. 10.
    A.F. Berndt, Acta Cryst. 14 301 (1961).CrossRefGoogle Scholar
  11. 11.
    S. Nicholson, D.G. Harris, J.J. Stobo, J. Nucl. Mat. 12 173 (1964).CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1974

Authors and Affiliations

  • A. A. Abou-Zahra
    • 1
  • P. Blanchard
    • 2
  • F. H. Hammad
    • 1
  1. 1.Atomic Energy EstablishmentCairoEgypt
  2. 2.C.E.AFrance

Personalised recommendations