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Microscopic Phase-Field Simulation of the Process of Middle Heat Treatment of Ni-Cr-Al Alloy

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Abstract:

The effect of the middle heat treatment+aging(1323K+1073K) for the precipitation mechanism and volume fraction of Ni-11at.%Cr-17at.%Al ternary alloy are studied based on microscopic phase-field model. The results show that the precipitation mechanism is non-classical nucleation and growth for the alloy at middle heat treatment, and the congruent ordering and spinodal decomposition mechanism occur at single-stage aging. The larger precipitation strengthening phases are obtained, the volume fraction of ordering phases and the averaged ordering parameter are higher, and the incubation period prolongs after the middle heat treatment.

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Info:

Periodical:

Applied Mechanics and Materials (Volumes 80-81)

Pages:

36-39

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.80-81.36

Citation:

Cite this paper

Online since:

July 2011

Authors:

Zhong Chu, Guo Qun Zhao

Keywords:

Microscope Phase-Field Model, Middle Heat Treatment, Ni-Cr-Al, Volume Fraction

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