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Dynamic deformation and damage in cast γ-TiAl during taylor cylinder impact: Experiments and model validation

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Abstract

The dynamic deformation, damage evolution, and cracking in four cast gamma titanium aluminide alloys have been investigated experimentally and theoretically. In this study, the dynamic compressive constitutive properties of several cast TiAl alloys were measured at quasi-static and dynamic rates. Using the measured high-strain-rate constitutive properties, the deformation, damage evolution, and postmortem specimen geometries observed in Taylor cylinder experiments were predicted using the mechanical threshold stress (MTS) constitutive model. The utility of the Taylor impact test for validation of high-rate constitutive models for intermetallics is discussed.

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Authors and Affiliations

  1. Los Alamos National Laboratory, 87501, Los Alamos, NM

    E. Cerreta (Staff Member), S. R. Chen (Staff Member) & G. T. Gray III (Team Leader)

  2. the Materials Science and Engineering Department, University of Michigan, 48109, Ann Arbor, MI

    T. M. Pollock (Professor)

Authors
  1. E. Cerreta
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  2. S. R. Chen
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  3. G. T. Gray III
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  4. T. M. Pollock
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Additional information

This article is based on a presentation given in the symposium “Dynamic Deformation: Constitutive Modeling, Grain Size, and Other Effects: In Honor of Prof. Ronald W. Armstrong,” March 2–6, 2003, at the 2003 TMS/ASM Annual Meeting, San Diego, California, under the auspices of the TMS/ASM Joint Mechanical Behavior of Materials Committe.

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Cerreta, E., Chen, S.R., Gray, G.T. et al. Dynamic deformation and damage in cast γ-TiAl during taylor cylinder impact: Experiments and model validation. Metall Mater Trans A 35, 2557–2566 (2004). https://doi.org/10.1007/s11661-004-0202-9

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  • DOI: https://doi.org/10.1007/s11661-004-0202-9

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