Creep-resistant, rhenium-free nickel base superalloy
作者： Harald Helmer , Ralf Rettig , Robert F. Singer , Steffen Neumeier
DOI:
关键词: Tantalum 、 Metallurgy 、 Materials science 、 Molybdenum 、 Superalloy 、 Cobalt 、 Tungsten 、 Rhenium 、 Chromium 、 Alloy
摘要: Disclosed is a nickel base alloy which substantially free of rhenium and has solidus temperature more than 1320° C. Precipitates γ′-phase are present in γ-matrix with fraction 40 to 50 vol % at 1050° 1100° C., γ/γ′ mismatch from −0.15% −0.25%. The comprises 11 13 aluminum, 4 14 cobalt, 6 12 chromium, 0.1 2 molybdenum, 3.5 tantalum, titanium, 3 tungsten. tungsten content the greater that precipitated γ′-phases.
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