The Effect of Forging and Heat Treatment Variables on Microstructure and Mechanical Properties of a Re-Bearing Powder-Metallurgy Nickel Base Superalloy
نویسندگان
چکیده
In our previous works, the effects of forging and heat treatment variables on microstructure evolution mechanical properties have been studied for an ingot-metallurgy Re-bearing nickel base superalloy. To overcome issues associated with production large-scale ingots fine-grained workpieces, in present work, effect hot was a superalloy prepared via powder metallurgy. The purpose study to reach properly balanced potential use as disc material. initial as-HIPed workpieces were subjected different post-forging or only (no forging). For processed recrystallization behavior, size, morphology volume fraction γ′ precipitates evaluated by scanning electron microscopy followed properties. most (strength, ductility, creep resistance rupture lifetime) reached γ grain size dγ ≈ 13.6 µm. A finer coarser (down 2.6 up 37.5 µm) even when superimposed higher dispersed secondary (in case = 27–37.5 worse
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ژورنال
عنوان ژورنال: Metals
سال: 2023
ISSN: ['2075-4701']
DOI: https://doi.org/10.3390/met13061110