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  • METALLIC MATERIALS  (1)
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    Effects of cobalt on the hot workability of nickel-base superalloys (1984)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: The effect of cobalt on the workability of nickel-base superalloys is examined with reference to experimental results for four heats of alloys based on the Nimonic 115 composition with varying amounts of nickel substituted for the nominal 14 percent cobalt. It is shown that Co lowers the gamma-prime solvus, which in turn lowers the Cr23C6 carbide solvus. It is further shown that these solvus temperatures bracket the hot working range for the alloys. However, thermomechanical processing modifications reflecting the effect of Co on the gamma-prime and carbide solvi are shown to restore the workability and the properties of alloys with little or no cobalt.
    Keywords: METALLIC MATERIALS
    Type: Superalloys 1984; Oct 07, 1984 - Oct 11, 1984; Champion, PA; United States
    Format: text
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