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    Hardening Ni3Al via complex stacking faults and twinning boundary

    Access Status
    Fulltext not available
    Authors
    Zhang, Z.
    Fu, Q.
    Wang, J.
    Xiao, P.
    Ke, F.
    Lu, Chunsheng
    Date
    2021
    Type
    Journal Article
    
    Metadata
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    Citation
    Zhang, Z. and Fu, Q. and Wang, J. and Xiao, P. and Ke, F. and Lu, C. 2021. Hardening Ni3Al via complex stacking faults and twinning boundary. Computational Materials Science. 188. Article No. 110201.
    Source Title
    Computational Materials Science
    DOI
    10.1016/j.commatsci.2020.110201
    ISSN
    0927-0256
    Faculty
    Faculty of Science and Engineering
    School
    School of Civil and Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/82382
    Collection
    • Curtin Research Publications
    Abstract

    © 2020 Elsevier B.V. Introducing nanoscale planar defects instead of adding alloying elements has been applied to improve the mechanical properties of materials. In this paper, we show that, from an atomistic perspective, hardness of nickel aluminide (Ni3Al) can be effectively enhanced by complex stacking faults and twinning boundary. The size effect of planar defects is induced by a competition between hardening because of regeneration of stacking faults and softening due to detwinning. The complex stacking faults have a better hardening effect than twinning boundaries with a spacing below 3.0 nm. These findings provide new insights into nanostructural design of aerospace materials with high hardness.

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