Grain growth modeling for additive manufacturing of nickel based superalloys

H. L. Wei, T. Mukherjee, T. DebRoy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations

Abstract

In a laser based additive manufacturing process, the alloy powders undergo a rapid heating, melting, solidification and cooling process. The morphology and the scale of the solidification structure depend on the temperature gradient and the growth rate during the additive manufacturing process. A comprehensive three dimensional transient heat transfer and fluid flow model has been used to calculate the temperature distribution, thermal cycles and local solidification parameters during laser based additive manufacturing process for nickel based super alloys. The growth direction of columnar dendrites and the solidification texture are estimated based on the computed temperature field. The effects of the process parameters on the growth directions, morphologies and scale of the solidification structures are discussed.

Original languageEnglish (US)
Title of host publicationProceedings of the 6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016
EditorsSusan Farjami, Priyadarshan Manohar, Gregory S. Rohre, Anthony D. Rollett, Elizabeth A. Holm, David Srolovitz, Hasso Weiland
PublisherSpringer International Publishing AG
Pages265-269
Number of pages5
ISBN (Print)9783319486260
DOIs
StatePublished - 2016
Event6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016 - Pittsburgh, United States
Duration: Jul 17 2016Jul 21 2016

Publication series

NameProceedings of the 6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016

Other

Other6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016
CountryUnited States
CityPittsburgh
Period7/17/167/21/16

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Materials Science(all)

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  • Cite this

    Wei, H. L., Mukherjee, T., & DebRoy, T. (2016). Grain growth modeling for additive manufacturing of nickel based superalloys. In S. Farjami, P. Manohar, G. S. Rohre, A. D. Rollett, E. A. Holm, D. Srolovitz, & H. Weiland (Eds.), Proceedings of the 6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016 (pp. 265-269). (Proceedings of the 6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016). Springer International Publishing AG. https://doi.org/10.1007/978-3-319-48770-0_39