Conclusions
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1.
Fiber-reinforced binary and multicomponent cobalt-base powder alloys have a strong propensity to intermetallic compound formation at their matrix/fiber interfaces and in their tungsten fibers. The probability of VT7 alloy fiber recrystallization is 25% at 1300°C and more than 90% at 1400°C in binary mixtures and about 50% at 1300°C in multicomponent mixtures.
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2.
The more complex the alloy composition, the greater is the probability of recrystallization — the change in the structure of tungsten fibers having the most deleterious effect on their strength.
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3.
Cobalt-base alloys show promise as matrices of heat-resisting metallic materials reinforced with tungsten and tungsten alloy fibers, and more investigational work should be conducted upon them.
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Translated from Poroshkovaya Metallurgiya, No. 7(187), pp. 57–64, July, 1978.
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Mirotvorskii, V.S., Ol'shevskii, A.A. Reactions of tungsten fibers with cobalt-base matrices. Powder Metall Met Ceram 17, 536–541 (1978). https://doi.org/10.1007/BF00791930
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DOI: https://doi.org/10.1007/BF00791930