Abstract
Hydrogen sintering and phase transformation is a Ti-6Al-4V heat treatment process capable of normalizing the microstructure of bulk parts. The mechanical properties of these processed parts are comparable to that of wrought Ti-6Al-4V, which makes it attractive for use in manufacturing areas where the resulting microstructure is difficult to control, like powder metallurgy and additive manufacturing. To investigate the application space of this heat treatment, Ti-6Al-4V parts were printed from three different additive methods (DMLS, EBM, and cold spray) and their tensile properties were evaluated in both the as-printed and heat treated states. Due to the size of the printed parts, millimeter scale tensile specimens were used and care must be taken to ensure the reduced sample size still produces reliable results. Preliminary tension tests show that the heat treatment process normalizes the microstructure, closes porosity, and improves ductility.
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References
Frazier, W.E.: Metal additive manufacturing: a review. J. Mater. Eng. Perform. 23(6), 1917–1928 (2014)
Xu, W., Brandt, M., Sun, S., Elambasseril, J., Liu, Q., Latham, K., Xia, K., Qian, M.: Additive manufacturing of strong and ductile Ti–6Al–4V by selective laser melting via in situ martensite decomposition. Acta Mater. 85, 74–84 (2015)
Leuders, S., Thöne, M., Riemer, A., Niendorf, T., Tröster, T., Richard, H.A., Maier, H.J.: On the mechanical behaviour of titanium alloy TiAl6V4 manufactured by selective laser melting: fatigue resistance and crack growth performance. Int. J. Fatigue. 48, 300–307 (2013)
Das, S., Wohlert, M., Beaman, J.J., Bourell, D.L.: Processing of titanium net shapes by SLS/HIP. Mater. Des. 20(2), 115–121 (1999)
Sun, P., Fang, Z.Z., Koopman, M.: A comparison of Hydrogen Sintering and Phase Transformation (HSPT) processing with vacuum sintering of CP-Ti. Adv. Eng. Mater. 15, 10 (2013)
Paramore, J.D., Fang, Z.Z., Sun, P., Koopman, M., Chandran, K.S.R., Dunstan, M.: A powder metallurgy method for manufacturing Ti-6Al-4V with wrought-like microstructures and mechanical properties via hydrogen sintering and phase transformation (HSPT). Scr. Mater. 107, 103–106 (2015)
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© 2019 The Society for Experimental Mechanics, Inc.
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Ligda, J.P., Butler, B.G., Saenz, N., Paramore, J. (2019). Mechanical Behavior of Additively Manufactured Ti-6Al-4V Following a New Heat Treatment. In: Kramer, S., Jordan, J., Jin, H., Carroll, J., Beese, A. (eds) Mechanics of Additive and Advanced Manufacturing, Volume 8. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-95083-9_6
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DOI: https://doi.org/10.1007/978-3-319-95083-9_6
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