Directional {gamma}-{gamma}{prime} coarsening in a monocrystalline nickel-based superalloy during low-cycle thermomechanical fatigue

Journal Article · Wed Feb 01 04:00:00 EST 1995 · Scripta Metallurgica et Materialia

DOI:https://doi.org/10.1016/S0956-716X(99)80074-0· OSTI ID:231117

Kraft, S; Altenberger, I; Mughrabi, H ^[1]

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1. Friedrich-Alexander Universitaet Erlangen-Nuernberg, Erlangen (Germany)

The coarsening behavior occurring in nickel-base superalloys hardened by initially cuboidal {gamma}{prime}-particles and having a negative misfit parameter is a well known phenomenon observed in the laboratory on specimens deformed under high-temperature creep conditions and also in turbine blades after engine operation. Less information is available on the coarsening behavior of these alloys under well-defined laboratory tests under simultaneously varying temperature and loading conditions such as in thermomechanical fatigue (TMF) tests. In this paper, the influence of different total strain-temperature cycle shapes on the coarsening behavior is described for the monocrystalline alloy CMSX-6.

• OSTI ID: 231117
• Journal Information: Scripta Metallurgica et Materialia, Journal Name: Scripta Metallurgica et Materialia Journal Issue: 3 Vol. 32; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
EXPERIMENTAL DATA
FATIGUE
HEAT RESISTING ALLOYS
MICROSTRUCTURE
NICKEL BASE ALLOYS
X-RAY DIFFRACTION