Microstructural and creep properties of boron- and zirconium-containing cobalt-based superalloys

The effects of micro-additions of boron and zirconium on grain-boundary (GB) structure and strength in polycrystalline γ(f.c.c.) plus γ′(L12) strengthened Co-9.5Al-7.5W-X at% alloys (X=0-Ternary, 0.05B, 0.01B, 0.05Zr, and 0.005B-0.05Zr at%) are studied. Creep tests performed at 850°C demonstrate tha...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2017-01, Vol.682 (C), p.260-269
Hauptverfasser:	Bocchini, Peter J., Sudbrack, Chantal K., Noebe, Ronald D., Dunand, David C., Seidman, David N.
Format:	Artikel
Sprache:	eng
Schlagworte:	Alloying additive Atom-probe tomography (APT) Boron Cobalt Cobalt base alloys Cobalt-base superalloys Cohesion Creep Creep strength Creep tests Gamma prime Grain boundaries Intergranular fracture Materials creep Microstructure Precipitates Strain rate Superalloys Tomography Zirconium Zirconium base alloys
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