C-Mo And C-Zr Alloys For Space Power Systems

R. C. Wilcox; B. Z. Jang; R. H. Zee; Y. K. Liaw; J. J. Liao

doi:10.1117/12.943689

6 April 1988 C-Mo And C-Zr Alloys For Space Power Systems

R. C. Wilcox, B. Z. Jang, R. H. Zee, Y. K. Liaw, J. J. Liao

Proceedings Volume 0871, Space Structures, Power, and Power Conditioning; (1988) https://doi.org/10.1117/12.943689
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

The C-Mo and C-Zr alloy systems were investigated as possible candidates for high temperature applications in extraterrestrial power systems. Alloys containing 0 to 6 weight percent carbon were produced using induction melting techniques. The Zr-C alloys produced were found to be composed of alpha-Zr and gamma (ZrC), while the Mo-C alloys were composed of theta (Mo₂C) and the eutectic mixture of Mo plus theta. The volume fraction of carbide increased as the carbon content was increased. Half of all alloys produced were annealed. The Mo-C alloys were heat treated in a vacuum furnace at 1370°C / 1 hr. / FC while the Zr-C alloys were annealed at 1000°C / 1 hr. / FC> Room temperature compression tests were performed on both the as-cast and annealed material. The results of these tests are described as a function of the volume fraction of the primary carbide phase present. The indicated a decrease in strength and a decrease in ductility as the volume fraction of carbide increased. Annealing was found to improve the properties over those of the as-cast materials. Microhardness of ZrC increased but all other phases seemed to be relatively independent of the carbide or C-content.

Citation Download Citation

R. C. Wilcox, B. Z. Jang, R. H. Zee, Y. K. Liaw, and J. J. Liao "C-Mo And C-Zr Alloys For Space Power Systems", Proc. SPIE 0871, Space Structures, Power, and Power Conditioning, (6 April 1988); https://doi.org/10.1117/12.943689

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