HREM observations of out-of-phase {gamma}{prime} precipitates in the MC2 single crystal superalloy
Journal Article
·
· Scripta Materialia
- Inst. National Polytechnique de Grenoble, Saint Martin-d`Heres (France)
The properties of nickel based single crystal superalloys are optimized by a range of thermal heat treatments which produce the precipitation of L1{sub 2} ({gamma}{prime}) ordered coherent particles embedded in a disordered fcc {gamma} matrix. The purpose of the present work is to examine by high resolution electron microscopy (HREM) the relative positions of closely spaced {gamma}{prime} precipitates in the MC2 single crystal superalloy. The present measurements of rigid shift components confirm the sporadic presence of out-of-phase precipitates. The authors describe briefly the route followed to determine unambiguously a shift component between adjacent precipitates in a material prepared from ONERA standard thermal treatment.
- OSTI ID:
- 382492
- Journal Information:
- Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 7 Vol. 35; ISSN XZ503X
- Country of Publication:
- United States
- Language:
- English
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