Abstract
A micro-scale interface dislocation dynamics approach to model the mechanical behavior of crystalline nanolaminates is presented. To circumvent the exhaustive atomistic modeling of interfaces and dislocations in nanolaminates, an atomistically informed dislocation dynamics model was developed in which interfaces are categorized using a geometrical interface classification scheme and the interface-dominated mechanical response is related to nucleation, glide, and reactions of lattice and interface dislocations at/within/across interfaces. We show that such a scheme is effective in mapping the structure–property relations of various types of interfaces.
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Notes
The physics of dislocation climb at interfaces is an exception, since climb of dislocations occurs at a much longer time scale. In this case, the physics and related parameters need to be obtained from experiments, e.g., high-resolution TEM observations.
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Acknowledgements
S.S. acknowledges the seed grant provided by the Louisiana State Board of Regents under contract number NSF(2017)-CIMMSeed-08. A.M. and J.W. acknowledge research sponsorship by DOE, Office of Basic Energy sciences. H.H. gratefully acknowledges the sponsorship of US Department of Energy Office of Basic Energy Science (DE-SC0014035).
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Shao, S., Misra, A., Huang, H. et al. Micro-scale modeling of interface-dominated mechanical behavior. J Mater Sci 53, 5546–5561 (2018). https://doi.org/10.1007/s10853-017-1662-9
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DOI: https://doi.org/10.1007/s10853-017-1662-9