Computational investigation of superalloy persistent slip bands formation

Jianfeng Huang, Zhonglai Wang, Yuanxin Luo, Yun Li, Erfu Yang, Yi Chen

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

    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 tensiletensile loadings. Simulation results show that PSBs formed within the ¿ 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.
    Original languageEnglish
    Title of host publication21st International conference on automation and computing
    Place of PublicationNew York
    PublisherIEEE
    ISBN (Electronic)978-0-9926-8011-4
    DOIs
    Publication statusPublished - Sep 2015

    Keywords

    • Persistent slip bands
    • PSB
    • fatigue
    • strain
    • load modeling
    • stress
    • FCC
    • Nickel
    • lattices

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  • Cite this

    Huang, J., Wang, Z., Luo, Y., Li, Y., Yang, E., & Chen, Y. (2015). Computational investigation of superalloy persistent slip bands formation. In 21st International conference on automation and computing IEEE. https://doi.org/10.1109/IConAC.2015.7313999