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TECHNICAL PAPERS

The Use of Refractory Metals as High Temperature Structural Materials

[+] Author and Article Information
C. L. Briant

Division of Engineering, Brown University, Providence, RI 02912

J. Eng. Mater. Technol 122(3), 338-341 (Mar 11, 2000) (4 pages) doi:10.1115/1.482806 History: Received January 15, 2000; Revised March 11, 2000
Copyright © 2000 by ASME
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References

Figures

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The tensile strength of niobium, tantalum and tungsten plotted as a function of temperature. Data taken from reference 1.
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The oxidation rate of tantalum, niobium, and tungsten plotted as a function temperature. Data taken from reference 1.
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Cyclic oxidation tests for samples heated to 1100°C in humid air. Data taken from reference 5.
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Creep data obtained at 1000°C and 138 MPa in humid air for Cr-8Ta-5Mo-0.5Ti-0.01Ce. The two different microstructures are indicated on the figure. Data were taken from reference 5.
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The oxidation resistance of standard niobium alloys, a Nb-Ti-Al-Cr-Hf alloy, and wrought nickel-base and cobalt-base superalloys. Data taken from reference 11.
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Oxidation data for Nb-Si based alloys at 1200°C. Also included are a commercial Nb-based alloy and Ni-based superalloy. Data taken from reference 11.
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Specific strength plotted as a function of temperature for selected alloys including a single-crystal nickel-based superalloy (PW1480). Figure taken from reference 11.
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Minimum creep rate plotted as a function of stress for selected alloys at 1200°C. PW1480 is a nickel-base superalloy, Cb753 and C103 are commercial niobium-based alloys, and TZM and Mo2Si are molybdenum based materials. Figure taken from reference 11.
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Creep rates of Nb-Si-Hf-Ti alloys plotted as a function of applied stress. Data taken at 1200°C. Data taken from reference 15.

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