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Effect of Built Geometry on the Microstructure and Strength Characteristics of the Ti–6Al–4V Alloy Prepared by the Selective Laser Melting

  • STRUCTURE, PHASE TRANSFORMATIONS, AND DIFFUSION
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Abstract

The microstructure and strength characteristics of the Ti–6Al–4V alloy prepared using the selective laser melting (SLM) method with different sample building geometry using an EOSINT M280 machine have been studied. It has been found that the hardness and elastic modulus (EIT) measured by the nanoindentation method depend on the sample built geometry. The sample that is built horizontally relative to the substrate has the highest hardness. The lowest hardness and elastic modulus (EIT) are observed in the sample grown at an angle of 30°. The residual internal tensile stresses and microstresses depending on the orientation of the sample relative to the built platform have been detected.

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ACKNOWLEDGMENTS

The work was performed under the state task (theme Diagnostika, no. АААА-А18-118020690196-3; theme Davlenie, no. АААА-А18-118020190104-3) and was partly supported by the Russian Foundation for Basic Research (project no. 17-03-000-84). The studied samples were prepared at the Regional Engineering Center, Ural Federal University. Structural studies and nanoindentation were performed at the Centers of Collaborative Access, Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences.

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Authors and Affiliations

  1. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620108, Ekaterinburg, Russia

    N. V. Kazantseva, I. V. Ezhov, N. I. Vinogradova & D. I. Davydov

  2. Ural State University of Railway Transport, 620034, Ekaterinburg, Russia

    N. V. Kazantseva

  3. Ural Federal University Named after the First President of Russia B.N. Yeltsin, 620002, Ekaterinburg, Russia

    M. V. Il’inykh, A. S. Fefelov, O. A. Oleneva & M. S. Karabanalov

Authors
  1. N. V. Kazantseva
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  2. I. V. Ezhov
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  3. N. I. Vinogradova
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  4. M. V. Il’inykh
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  5. A. S. Fefelov
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  6. D. I. Davydov
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  7. O. A. Oleneva
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  8. M. S. Karabanalov
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Correspondence to N. V. Kazantseva.

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Translated by O. Golosova

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Kazantseva, N.V., Ezhov, I.V., Vinogradova, N.I. et al. Effect of Built Geometry on the Microstructure and Strength Characteristics of the Ti–6Al–4V Alloy Prepared by the Selective Laser Melting. Phys. Metals Metallogr. 119, 1079–1086 (2018). https://doi.org/10.1134/S0031918X18110066

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  • DOI: https://doi.org/10.1134/S0031918X18110066

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