Some implications of the particle and climb geometry on the climb resistance in nickel-base superalloys

Journal Article · Mon Apr 01 00:00:00 EST 1996 · Acta Materialia

DOI:https://doi.org/10.1016/1359-6454(95)00274-X· OSTI ID:230791

Mukherji, D; Wahi, R P ^[1]

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1. Hahn-Meitner-Inst. Berlin GmbH (Germany). Dept. of Structural Research

Various dislocation climb models were developed for modeling the deformation processes in precipitation hardened alloys at elevated temperatures and low applied stresses. These models have been applied to alloy systems containing spherical, cubic and other precipitate shapes. However, in applying these models to alloys containing cubic precipitates, the particle orientation with respect to the slip plane and the slip geometry relevant to the nickel-base superalloys was not considered. In this paper the authors show that by taking into account the realistic climb and glide geometries, the value of the climb resistances considerably differ from those reported earlier on the basis of simplified geometries.

• OSTI ID: 230791
• Journal Information: Acta Materialia, Vol. 44, Issue 4; Other Information: PBD: Apr 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
NICKEL BASE ALLOYS
DEFORMATION
MICROSTRUCTURE
MATHEMATICAL MODELS
FCC LATTICES
DISLOCATIONS
PRECIPITATION
HARDENING
STRESSES
SHAPE
ORIENTATION
SLIP