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Advances in Modeling Phase Transformations

FOCUS · Y05 · ID: 1459162

Presentations

  • Transformation mechanisms for the pressure-induced phase transition in single crystal CdS

    ORAL

    –

    Presenters

    • Marcus D Knudson

      Sandia National Laboratories

    Authors

    • Marcus D Knudson

      Sandia National Laboratories

    • Dane V Morgan

      MSTS, Albuquerque NM USA

    • Tommy Ao

      Sandia National Laboratories

    • Mark A Rodriguez

      Sandia National Laboratories

    • David O Montes de Oca Zapiain

      Sandia National laboratories

    • J Matthew D Lane

      Sandia National Laboratories

    View abstract →

  • Coupled Severe Plastic Deformations, Phase Transformations, and Microstructure Evolution under High Pressure: Four-scale Theory and In-situ Experiments

    ORAL · Invited

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    Publication: [1] Levitas V.I. High Pressure Mechanochemistry: Conceptual Multiscale Theory and Interpretation of Experiments. Phys Rev. B, 70, 184118 (2004).<br>[2] Levitas V.I. High-Pressure Phase Transformations under Severe Plastic Deformation by Torsion in Rotational Anvils. Material Transactions, 2019, 60, 1294-1301, invited review. <br>[3] Levitas V.I. Phase transformations, fracture, and other structural changes in inelastic materials. International Journal of Plasticity, 2021, 140, 102914, 51 pp., invited review.<br>[4] C. Ji, V.I. Levitas, H. Zhu, J. Chaudhuri, A. Marathe, Y. Ma, Shear-Induced Phase Transition of Nanocrystalline Hexagonal Boron Nitride to Wurtzitic Structure at Room Temperature and Low Pressure. Proceedings of the National Academy of Sciences of the United States of America, 109, 191088 (2012).<br>[5] Gao Y., Ma Y., An Q., Levitas V. I., Zhang Y., Feng B., Chaudhuri J. and Goddard III W. A. Shear driven formation of nano-diamonds at sub-gigapascals and 300 K. Carbon, 2019, 146, 364-368.<br>[6] Pandey K. K. and Levitas V. I. In situ quantitative study of plastic strain-induced phase transformations under high pressure: Example for ultra-pure Zr. Acta Materialia, 2020, 196, 338-346.<br>[7] Lin F., Levitas V.I., Pandey K.K., Yesudhas S., Park C. Laws of high-pressure phase and nanostructure evolution and severe plastic flow. September 9, 2022, 29 pp. Research Square, DOI: https://doi.org/10.21203/rs.3.rs-1998605/v1.V.I. <br>[8] Levitas V.I., Chen H., Xiong L. Triaxial-stress-induced homogeneous hysteresis-free first-order phase transformations with stable intermediate phases. Phys. Rev. Lett., 118, 025701 (2017). <br>[9] Levitas V.I., Chen H., Xiong L. Lattice instability during phase transformations under multiaxial stress: modified transformation work criterion. Phys. Rev. B, 96, 054118 (2017).<br>[10] Zarkevich N. A., Chen H., Levitas V.I., and Johnson D. D. Lattice instability during solid-solid structural transformations under general applied stress tensor: example of Si I?Si II with metallization. Phys. Rev. Lett., 121, 165701 (2018).<br>[11] Chen H., Zarkevich N. A., Levitas V. I., Johnson D. D., and Zhang X. Fifth-degree elastic energy for predictive continuum stress-strain relations and elastic instabilities under large strain and complex loading in silicon. NPJ Computational Materials. (2020) 6, 115.<br>[12] Javanbakht M. and Levitas V.I. Phase field simulations of plastic strain-induced phase transformations under high pressure and large shear. Physical Review B, 94, 214104 (2016).<br>[13] Levitas V.I., Esfahani S.E., and Ghamarian I. Scale-free modeling of coupled evolution of discrete dislocation bands and multivariant martensitic microstructure. Phys. Review Lett., 121, 20570 (2018).<br>[14] Esfahani S.E., Ghamarian I., Levitas V.I. Strain-induced multivariant martensitic transformations: A scale-independent simulation of interaction between localized shear bands and microstructure. Acta Materialia, 2020, 196, 430-443.<br>[15] Feng B., Levitas V.I., Li W. FEM modeling of plastic flow and strain-induced phase transformation in BN under high pressure and large shear in a rotational diamond anvil cell. Int J Plasticity, 2019, 113, 236-254.

    Presenters

    • Valery I Levitas

      Iowa State University

    Authors

    • Valery I Levitas

      Iowa State University

    View abstract →