Properties and microstructures for dual alloy combinations of three superalloys with alloy 901
Dual alloy combinations have potential for use in aircraft engine components such as turbine disks where a wide range of stress and temperature regimes exists during operation. Such alloy combinations may directly result in the conservation of elements which are costly or not available domestically. Preferably, a uniform heat treatment yielding good properties for both alloys should be used. Dual alloy combinations of iron rich Alloy 901 with nickel base superalloys Rene 95, Astroloy, or MERL 76 were not isostatically pressed from prealloyed powders. Individual alloys, alloy mixtures, and layered alloy combinations were given the heat treatments specified for their use in turbine disks or appropriate for Alloy 901. Selected specimens were overaged for 1500 hr at 650 C. Metallographic examinations revealed the absence of phases not originally present in either alloy of a combination. Mechanical tests showed adequate properties in combinations of Rene 95 or Astroloy with Alloy 901 when given the Alloy 901 heat treatment. Combinations with MERL 76 had better properties when given the MERL 76 heat treatment. The results indicate that these combinations are promising candidates for use in turbine disks.
- Research Organization:
- National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
- OSTI ID:
- 5090312
- Report Number(s):
- NASA-TM-86987; E-2397; CONF-850211-15
- Resource Relation:
- Conference: 114. AIME annual meeting (includes Society of Mining Engineers), New York, NY, USA, 24 Feb 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HEAT RESISTING ALLOYS
MECHANICAL PROPERTIES
MICROSTRUCTURE
ALLOY SYSTEMS
ASTROLOY
HEAT TREATMENTS
HIGH TEMPERATURE
INCOLOY 901
METALLOGRAPHY
RENE 95
STRAIN HARDENING
TECHNOLOGY ASSESSMENT
TURBINE BLADES
ALLOYS
ALUMINIUM ALLOYS
BORON ADDITIONS
BORON ALLOYS
CARBON ADDITIONS
CHROMIUM ALLOYS
COBALT ALLOYS
CRYSTAL STRUCTURE
HARDENING
HEAT RESISTANT MATERIALS
INCOLOY ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
TITANIUM ALLOYS
TUNGSTEN ALLOYS
ZIRCONIUM ADDITIONS
ZIRCONIUM ALLOYS
360102* - Metals & Alloys- Structure & Phase Studies
360103 - Metals & Alloys- Mechanical Properties