Effect of Initial Particle Size on Coarsening Kinetics of γ Prime Precipitate in Nickel-Based Superalloy - A Phase Field Study

Abstract:

Article Preview

The effect of initia gamma prime particle size on coarsening kinetics of gamma prime precipitates in Nickel-based superalloys has been studied by means of phase field method which takes into account the lattice misfit. The simulation shows that the gamma prime precipitate morphology at the late stage of coarsening is independent of initial particle size, and the rectangle-like precipitates dominate the matrix which is in good agreement with experimental studies. The coarsening exponent increases with initial size, while the coarsening rate constant exhibits no apparent regularity. Although the coarsening trend is independent of initial particle size, the precipitate size increases with initial size at a given aging time. Through precipitate size distribution calculation, it is found that the size distribution is fairly stable, which is not sensitive to the initial particle size.

Info:

Periodical:

Edited by:

Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen

Pages:

1834-1838

DOI:

10.4028/www.scientific.net/AMM.117-119.1834

Citation:

C. B. Ke and B. Z. Xie, "Effect of Initial Particle Size on Coarsening Kinetics of γ Prime Precipitate in Nickel-Based Superalloy - A Phase Field Study", Applied Mechanics and Materials, Vols. 117-119, pp. 1834-1838, 2012

Online since:

October 2011

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.