TY - GEN
T1 - Grain growth modeling for additive manufacturing of nickel based superalloys
AU - Wei, H. L.
AU - Mukherjee, T.
AU - DebRoy, T.
N1 - Funding Information:
We acknowledge the support from US Department of Energy NEUP Grant DE-NE0008280. One of the author (T.M.) also acknowledges the support from American Welding Society research fellowship grant 179466.
Publisher Copyright:
© 2016, Springer International Publishing AG. All rights reserved.
PY - 2016
Y1 - 2016
N2 - 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.
AB - 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.
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U2 - 10.1007/978-3-319-48770-0_39
DO - 10.1007/978-3-319-48770-0_39
M3 - Conference contribution
AN - SCOPUS:85025114546
SN - 9783319486260
T3 - Proceedings of the 6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016
SP - 265
EP - 269
BT - Proceedings of the 6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016
A2 - Farjami, Susan
A2 - Manohar, Priyadarshan
A2 - Rohre, Gregory S.
A2 - Rollett, Anthony D.
A2 - Holm, Elizabeth A.
A2 - Srolovitz, David
A2 - Weiland, Hasso
PB - Springer International Publishing AG
T2 - 6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016
Y2 - 17 July 2016 through 21 July 2016
ER -