Development of low density single crystal superalloy CMSX-6

Conference · · TMS (The Metallurgical Society) Paper Selection; (USA)

OSTI ID:5367172

Harris, K; Erickson, G L; Wortmann, J; Froschhammer, D ^[1]

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1. Cannon-Muskegon Corp., MI (USA)

Limitations in turbine disc strength capability can, in certain design cases, mandate the use of low density single crystal superalloy turbine blade components. The development of CMSX-6 nickel-base superalloy (density 0.288 lbs/cu. in. (7.98 gms./cc)) to meet these design requirements is presented and discussed. Extensive solution treatment studies are shown and enable the high {gamma}/{gamma}{prime} eutectic content of the as-cast single crystal CMSX-6 to be extensively solutioned, without incipient melting problems. Attractive mechanical property data - creep-rupture, HCF LCF (high and low cycle fatigue) - are presented for the alloy. Environmental properties, both bare and coated oxidation/corrosion resistance, are shown to be appreciably superior to IN100 alloy.

• OSTI ID: 5367172
• Report Number(s): CONF-840909--
• Conference Information: Journal Name: TMS (The Metallurgical Society) Paper Selection; (USA) Journal Volume: 56
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CHEMICAL REACTIONS
CORROSION RESISTANCE
CREEP
CRYSTAL STRUCTURE
DENSITY
FABRICATION
FAILURES
FATIGUE
MECHANICAL PROPERTIES
NICKEL ALLOYS
NICKEL BASE ALLOYS
OXIDATION
PHYSICAL PROPERTIES
RUPTURES
TECHNOLOGY ASSESSMENT
TURBINE BLADES