THE INFLUENCE OF THE DENDRITIC STRUCTURE ON THE GAMMA GAMMA'-LATTICE MISFIT IN THE SINGLE-CRYSTAL NICKEL-BASE SUPER-ALLOY CMSX-4/

Authors
BRUCKNER U EPISHIN A LINK T DRESSEL K
Citation
U. Bruckner et al., THE INFLUENCE OF THE DENDRITIC STRUCTURE ON THE GAMMA GAMMA'-LATTICE MISFIT IN THE SINGLE-CRYSTAL NICKEL-BASE SUPER-ALLOY CMSX-4/, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 247(1-2), 1998, pp. 23-31
Citations number
19
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
247
Issue
1-2
Year of publication
1998
Pages
23 - 31
Database
ISI
SICI code
0921-5093(1998)247:1-2<23:TIOTDS>2.0.ZU;2-S
Abstract
The gamma/gamma'-lattice misfit was measured locally by X-ray diffract ion in the rhenium-containing single-crystal nickel-base superalloy CM SX-4. Different sections of a single crystal casting and positions in the dendritic structure have been analyzed. A remarkable difference of the misfit caused by segregation of refractory elements was found bet ween the dendrite center and periphery. Problems of measurement and ch aracterization of the gamma/gamma'-lattice misfit in superalloys of ne w generations with a high refractory element level are discussed. (C) 1998 Elsevier Science S.A. All rights reserved.