Studies of Tungsten Composites Containing Fibered or Reacted Additives

  • Max Quatinetz
  • John W. Weeton
  • Thomas P. Herbell


Twenty-one sintered tungsten and tungsten-plus-additive billets were prepared in order to evaluate the feasibility of producing fiber-bearing composites by the elongation of materials in situ (in a tungsten matrix) during extrusion and to study reactions between the additives and the matrix with the objective of producing high-strength materials. Eight compounds, including oxides, borides, nitrides, and carbides, ranging in melting point from 4370–7030°F were successfully elongated in tungsten by extrusion at 4200°F. All composites with less than 10 vol. % additive exhibited improvements in stress-rupture strength. Composites with highly elongated additives ranged from 4 to 18 times better in stress-rupture life at 3000°F than the unreinforced pure tungsten matrix. The stress-rupture lives of several composites with more reactive additives and only moderate fibering increased to 25 to 50 times that of tungsten at 3000°F. The strengthening was presumed to be caused by reactions between the additives and the matrix. No judgment could be made from the study as to what extent the in situ fibering contributed to the increased strength. Because of inherent advantages, the in situ fibering method appears to have great potential for producing strong fibered composite materials and for producing fibers from strong, hard, and brittle refractory compounds and other relatively nondeformable materials.


Creep Rate Reduction Ratio Rupture Life Refractory Compound Extrusion Pressure 
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.
    Schmidt, F. S., and H. R. Ogden, “The Engineering Properties of Tungsten and Tungsten Alloys,” Report DMIC 191, Battelle Memorial Institute, Sept. 27, 1963.Google Scholar
  2. 2.
    Raffo, Peter L., William D. Klopp, and Walter R. Witzke, “Mechanical Properties of Arc-Melted and Electron-Beam-Melted Tungsten-Base Alloys,” NASA Tech. Note TN D-2561 (1964).Google Scholar
  3. 3.
    Atkinson, R. H., et al., “Physical Metallurgy of Tungsten and Tungsten-Base Alloys,” TR 60–37, parts I-II, WADD, May 1960-May 1961.Google Scholar
  4. 4.
    McDanels, David L., Robert W. Jech, and John W. Weeton, “Stress-Strain Behavior of Tungsten-Fiber-Reinforced Copper Composites,” NASA Tech. Note TN D-1881 (1963).Google Scholar
  5. 5.
    Sutton, W. H., “Development of Composite Structural Materials for High Temperature Applications,” General Electric Company PR-11 (Dec. 1962-Feb. 1963).Google Scholar
  6. 6.
    Triffleman, B., “New Pre-Alloyed Powder Process and Product,” in: Progress in Powder Metallurgy, Vol. 18, Metal Powder Industry Federation (New York), 1962, p. 156.Google Scholar
  7. 7.
    Sikora, Paul F., and Robert W. Hall, “High-Temperature Tensile Properties of Wrought Sintered Tungsten,” NASA Tech. Note TN D-79 (1959).Google Scholar
  8. 8.
    Barth, V. D., “Review of Recent Developments in the Technology of Tungsten,” DMIC Memo. 139, Battelle Memorial Institute, Nov. 24, 1961.Google Scholar
  9. 9.
    Petrasek, Donald W., and John W. Weeton, “Effects of Alloying on Room-Temperature Tensile Properties of Tungsten-Fiber-Reinforced Copper-Alloy Composites,” AIME Trans. 230(5): 977–990 (1964). See also NASA Tech. Note TN D-1568.Google Scholar
  10. 10.
    Komatsu, Noboru, and Nicholas J. Grant, “Particle Coarsening in a Copper-Silica Alloy,” AIME Trans. 230(5): 1090–1096 (1964).Google Scholar
  11. 11.
    Chang, W. H., “Effect of Titanium and Zirconium on Microstructure of Carbide Strengthened Molybdenum Alloys,” Am. Soc. Metals, Trans. Quart. 57(2): 527–553 (1964).Google Scholar
  12. 12.
    Hobson, D. O., “Aging Phenomena in Columbium-Base Alloys,” in: R. F. Hehemann and G. M. Ault (eds.), High-Temperature Materials, Vol. II, Interscience Publishers (New York), 1963, p. 325.Google Scholar
  13. 13.
    Spitzig, W. A., and G. W. Form, “Effects of Sintering on the Physical and Mechanical Properties of Arc Plasma-Sprayed Tungsten,” AIME Trans. 230(1): 67–70 (1964).Google Scholar

Copyright information

© Springer Science+Business Media New York 1966

Authors and Affiliations

  • Max Quatinetz
    • 1
  • John W. Weeton
    • 1
  • Thomas P. Herbell
    • 1
  1. 1.Lewis Research CenterClevelandUSA

Personalised recommendations