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Numerical Simulation of Dendrite Growth and Micro Segregation of Ni-Cu Alloy

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Abstract:

Dendrite growth of Ni-0.4083%Cu alloy was simulated by the phase-field method in the paper. The impact of super-cooling degree and super-saturation degree and solute segregation on dendrite growth was studied systematically. solute segregation increased initially then tended to decrease. The increase of super-saturation can promote the growth of lateral branch and destroy the constancy of the dendrite tip at the same time. The simulation result was compared with the microscopic theory and they have a good agreement.

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Periodical:

Materials Science Forum (Volume 944)

Pages:

155-162

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.944.155

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Online since:

January 2019

Authors:

Ming Guang Wang*, Shan Jiang

Keywords:

Ni-Cu Alloy, Super-Cooling, Super-Saturation Degree

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© 2019 Trans Tech Publications Ltd. All Rights Reserved

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