Effects of carbon and hafnium concentrations in wrought powder-metallurgy superalloys based on nasa 2b-11 alloy

Technical Report · Wed Dec 31 23:00:00 EST 1975

OSTI ID:7249210

Miner, Jr, R V

A candidate alloy for advanced-temperature turbine engine disks and four modifications of that alloy with various C and Hf concentrations were produced as cross-rolled disks from prealloyed powder that was hot isostatically compacted. The mechanical properties, microstructures, and phase relations of the alloys are discussed in terms of their C and Hf concentrations. A low-C and high-Hf modification of IIB-11 had the best balance of mechanical properties for service below about 750 C. Because of their finer grain sizes, none of the powder-metallurgy alloys produced had the high-temperature rupture strength of conventionally cast and wrought IIB-11. (Author) (GRA)

• OSTI ID: 7249210
• Report Number(s): N-76-14246; NASA-TN-D-8113; E-8468
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CARBON ADDITIONS
HAFNIUM ALLOYS
HEAT RESISTING ALLOYS
HIGH TEMPERATURE
MECHANICAL PROPERTIES
METALLURGY
POWDER METALLURGY
TURBINES
TURBOMACHINERY