Huang, J., Wang, Z., Luo, Y., Li, Y. , Yang, E. and Chen, Y. (2015) Computational Investigation of Superalloy Persistent Slip Bands Formation. In: 21st International Conference on Automation & Computing (ICAC 2015), Glasgow, Scotland, 11-12 Sep 2015, pp. 1-6. (doi: 10.1109/IConAC.2015.7313999)
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Publisher's URL: http://dx.doi.org/10.1109/IConAC.2015.7313999
Abstract
Persistent slip bands (PSB) is the important and typical microstructure generated during fatigue crack initiation. Intensive works have been done to investigate the mechanisms of the formation of persistent slip bands in the past decade. In this paper, a molecular dynamics (MD) simulation associated with embedded atom model (EAM) is applied on the PSBs formation in nickel-base superalloys with different microstructure and temperature under tensile-tensile loadings. Simulation results show that PSBs formed within the γ phase by massive dislocations pile-up and propagation which can penetrate the grain. Also, the temperature will affect the material fatigue performance and blur PSBs appearance. The simulation results are in strong agreement with the experimental test results published before.
Item Type: | Conference Proceedings |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Chen, Mr Yi and Li, Professor Yun |
Authors: | Huang, J., Wang, Z., Luo, Y., Li, Y., Yang, E., and Chen, Y. |
College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
Copyright Holders: | Copyright © 2015 IEEE |
Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher. |
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