Influence of Particle Mechanisms on Kinetics of Grain Growth in a P/M Superalloy

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The current literature reports the quantitative analysis of the kinetics of grain growth influenced by second-phase particle mechanisms for a powder metallurgy nickel-base superalloy: APK-6. Annealing treatments in the superalloy are shown to involve coarsening/dissolution of γ’ particles, and these particles mechanisms are shown to influence the kinetics of grain growth. The grain-growth exponent, n, is computed, and the γ’-solvus temperature of the superalloy is determined to lie between 220 and 270 oC. The kinetic data is interpreted to establish dependence of γ’ particles coarsening/dissolution mechanisms, grain size, γ’-solvus temperature, and annealing time and temperature on the rates of grain growth in the superalloy.

Info:

Periodical:

Materials Science Forum (Volumes 467-470)

Edited by:

B. Bacroix, J.H. Driver, R. Le Gall, Cl. Maurice, R. Penelle, H. Réglé and L. Tabourot

Pages:

985-990

DOI:

10.4028/www.scientific.net/MSF.467-470.985

Citation:

Z. Huda "Influence of Particle Mechanisms on Kinetics of Grain Growth in a P/M Superalloy", Materials Science Forum, Vols. 467-470, pp. 985-990, 2004

Online since:

October 2004

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$35.00

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