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Phase Field Crystal Simulation of Grain Growth in BCC Metals during Additive Manufacturing

Published online by Cambridge University Press:  23 January 2017

Hang Ke  and
Ioannis Mastorakos
Hang Ke*
Affiliation:
Department of Mechanical and Aeronautical Engineering, Clarkson University, Potsdam, NY 13699, USA
Ioannis Mastorakos
Affiliation:
Department of Mechanical and Aeronautical Engineering, Clarkson University, Potsdam, NY 13699, USA
*
*(Email: keh@clarkson.edu)

Abstract

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In this work, we demonstrate that the phase field crystal (PFC) method can be applied to identify and predict the microstructure evolution during the solidification of the BCC metals in additive manufacturing. The results reveal the columnar structure of the grains, which matches the grain growth observed in real samples produced with the additive manufacturing technique. The effect of ambient temperature, seed-seed distance and seed-seed misorientation on the grain growth has been investigated. In addition, the formation of crystal defects during the process is recorded and the resulted long-range stresses are calculated using the eigenstresses theory.

Keywords

microstructuresimulationcrystal growth
Type
Articles
Information
MRS Advances , Volume 2 , Issue 16: Processing and Manufacturing , 2017 , pp. 887 - 896
Copyright
Copyright © Materials Research Society 2017 

References

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