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Columnar Grain Growth Pattern with Fluid Flowing in Molten Pool by Rui Ma; Zhibo Dong; Yanhong Wei; Xiaohong Zhan; Yong Wang is a Materials Science article available to read on EtoBox.

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## Abstract A coupled model was used to simulate columnar grain growth in TIG (tungsten inert‐gas) molten pool of nickel base alloy. The cellular automaton algorithm for dendritic growth is incorporated with solute transport model to take fluid flow into consideration. The results indicate that shear flow changes the solute distribution at the S/L (Solid/Liquid) interface, leading to asymmetrical growth of columnar grains. The dendrite arms on the upstream side grow fast, while the growth of dendrite arms on the downstream side is much delayed. However, dendrite arms on both sides are not as well‐developed as the grain growth without flow. With inlet flow velocity increasing, the phenomenon becomes more obvious. In addition, shear flow also results in more severe coring segregation. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Who reads Columnar Grain Growth Pattern with Fluid Flowing in Molten Pool?

Author

Rui Ma; Zhibo Dong; Yanhong Wei; Xiaohong Zhan; Yong Wang

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); Wiley - V C H Verlag GmbbH & Co.; Wiley (ISSN 0232-1300)

Published

2009

Language

EN

Field

Materials Science (Physical Sciences)