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Phase Field Model for Grain Growth with Second-Phase Particles of Stick Shape

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Abstract:

The phase field method was applied to study the effect of second-phase particles (SPP) with different geometric orientations and shapes on grain growth. The results show that, in the grain growth process, most of the spherical second-phase particles located at triple junctions, while the stick SPPs located at the grain boundaries along the grain boundary. The second-phase particles are of the strong pinning effect on grain boundary and the limiting grain radius can be expressed by Zener relations. In the condition of the second-phase particles area fraction and size remaining the same, the stick SPPs are of more effective pinning on grain growth than that for spherical SPPs, and the orientation of disk second-phase particles is also an influence factor for pinning effect. Stick second-phase particles with multiple orientations can make a better pining effect than those with only one orientation.

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Periodical:

Advanced Materials Research (Volume 741)

Pages:

3-6

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.741.3

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Online since:

August 2013

Authors:

Wen Quan Zhou, Ying Juna Gao, Yao Liu, Zhi Rong Luo, Chuang Gao Huang

Keywords:

Grain Growth, Phase Field Model, Second-Phase Particles, Zener Pinning

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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