INFLUENCE OF HEAT-TREATMENT ON THE MICROSTRUCTURE OF THE SINGLE-CRYSTAL NICKEL-BASE SUPERALLOY SC16

Authors
MALOW T ZHU J WAHI RP
Citation
T. Malow et al., INFLUENCE OF HEAT-TREATMENT ON THE MICROSTRUCTURE OF THE SINGLE-CRYSTAL NICKEL-BASE SUPERALLOY SC16, Zeitschrift fur Metallkunde, 85(1), 1994, pp. 9-19
Citations number
24
Categorie Soggetti
Metallurgy & Mining
Journal title
Zeitschrift fur Metallkunde → ACNP
ISSN journal
00443093
Volume
85
Issue
1
Year of publication
1994
Pages
9 - 19
Database
ISI
SICI code
0044-3093(1994)85:1<9:IOHOTM>2.0.ZU;2-I
Abstract
The microstructure of the recently developed single-crystal nickel-bas e alloy SC16 is investigated in the as-cast state and after different heat treatments using a number of complementary experimental technique s. The chemical composition of this alloy is based on that of the poly crystalline IN738LC. The effect of cooling rate after solution treatme nt on the gamma' particle size on ageing is investigated and the growt h kinetics of the precipitates of gamma' phase during one-and two-step ageing are described quantitatively. The chemical compositions of the matrix and the precipitate phases in various heat treated conditions are determined. The precipitate volume fractions are derived for some heat treated conditions by means of three different methods. Some of t he parameters are compared with those of IN738LC.