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http://dx.doi.org/10.1007/s40684-018-0062-1

Microstructure-Properties Relationships of Ti-6Al-4V Parts Fabricated by Selective Laser Melting  

Mezzetta, Justin (Department of Mining and Materials Engineering, McGill University)
Choi, Joon-Phil (Department of Mining and Materials Engineering, McGill University)
Milligan, Jason (Department of Mining and Materials Engineering, McGill University)
Danovitch, Jason (Department of Mining and Materials Engineering, McGill University)
Chekir, Nejib (Department of Mining and Materials Engineering, McGill University)
Bois-Brochu, Alexandre (Recherche et Developpement, Centre de metallurgie du Quebec (CMQ))
Zhao, Yaoyao Fiona (Department of Mechanical Engineering, McGill University)
Brochu, Mathieu (Department of Mining and Materials Engineering, McGill University)
Publication Information
International Journal of Precision Engineering and Manufacturing-Green Technology / v.5, no.5, 2018 , pp. 605-612 More about this Journal
Abstract
This work investigates the relationships between the static mechanical properties of Ti-6Al-4V manufactured through selective laser melting (SLM) and post-process heat treatments, namely stress relieve, annealing and hot isostatic pressing (HIP). In particular, Ti-6Al-4V parts were fabricated in three different build orientations of X, Z, and $45^{\circ}$ to investigate the multi-directional mechanical properties. The results showed that fully densified Ti-6Al-4V parts with densities of up to 99.5% were obtained with optimized SLM parameters. The microstructure of stress relieved and mill annealed samples was dominated by fine ${\alpha}^{\prime}$ martensitic needles. After HIP treatment, the martensite structure was fully transformed into ${\alpha}$ and ${\beta}$ phases (${\alpha}+{\beta}$ lamellar). Within the realm of tensile properties, the yield and ultimate strength values were found statistically similar with respect to the built orientation for a given heat treatment. However, the ductility was found orientation dependent for the HIP samples, where a lower value was observed for samples built in the X direction.
Keywords
Selective laser melting; Titanium; Heat treatment; Microstructure; Hot isostatic pressing;
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1 Aboulkhair, N. T., Everitt, N. M., Ashcroft, I., and Tuck, C., "Reducing Porosity in AlSi10Mg Parts Processed by Selective Laser Melting," Additive Manufacturing, Vol. 1, pp. 77-86, 2014.
2 Leuders, S., Thöne, M., Riemer, A., Niendorf, T., Tröster, T., et al., "On the Mechanical Behaviour of Titanium Alloy TiAl6V4 Manufactured by Selective Laser Melting: Fatigue Resistance and Crack Growth Performance," International Journal of Fatigue, Vol. 48, pp. 300-307, 2013.   DOI
3 Vrancken, B., Thijs, L., Kruth, J.-P., and Van Humbeeck, J., "Heat Treatment of Ti-6Al-4V Produced by Selective Laser Melting: Microstructure and Mechanical Properties," Journal of Alloys and Compounds, Vol. 541, pp. 177-185, 2012.   DOI
4 Wauthle, R., Vrancken, B., Beynaerts, B., Jorissen, K., Schrooten, J., et al., "Effects of Build Orientation and Heat Treatment on the Microstructure and Mechanical Properties of Selective Laser Melted Ti-6Al-4V Lattice Structures," Additive Manufacturing, Vol. 5, pp. 77-84, 2015.   DOI
5 Donachie, M. J., "Titanium: A Technical Guide," ASM International, 2000.
6 Xu, W., Brandt, M., Sun, S., Elambasseril, J., Liu, Q., et al., "Additive Manufacturing of Strong and Ductile Ti-6Al-4V by Selective Laser Melting via in Situ Martensite Decomposition," Acta Materialia, Vol. 85, pp. 74-84, 2015.   DOI
7 Rafi, H., Karthik, N., Gong, H., Starr, T. L., and Stucker, B. E., "Microstructures and Mechanical Properties of Ti-6Al-4V Parts Fabricated by Selective Laser Melting and Electron Beam Melting," Journal of Materials Engineering and Performance, Vol. 22, No. 12, pp. 3872-3883, 2013.   DOI
8 Murr, L., Quinones, S., Gaytan, S., Lopez, M., Rodela, A., et al., "Microstructure and Mechanical Behavior of Ti-6Al-4V Produced by Rapid-Layer Manufacturing, for Biomedical Applications," Journal of the Mechanical Behavior of Biomedical Materials, Vol. 2, No. 1, pp. 20-32, 2009.   DOI
9 Koike, M., Greer, P., Owen, K., Lilly, G., Murr, L. E., et al., "Evaluation of Titanium Alloys Fabricated using Rapid Prototyping Technologies-Electron Beam Melting and Laser Beam Melting," Materials, Vol. 4, No. 10, pp. 1776-1792, 2011.   DOI
10 Mertens, A., Reginster, S., Paydas, H., Contrepois, Q., Dormal, T., et al., "Mechanical Properties of Alloy Ti-6Al-4V and of Stainless Steel 316L Processed by Selective Laser Melting: Influence of Outof- Equilibrium Microstructures," Powder Metallurgy, Vol. 57, No. 3, pp. 184-189, 2014.   DOI
11 Vilaro, T., Colin, C., and Bartout, J. D., "As-Fabricated and Heat- Treated Microstructures of the Ti-6Al-4V Alloy Processed by Selective Laser Melting," Metallurgical and Materials Transactions, Vol. 42, No. 10, pp. 3190-3199, 2011.   DOI
12 Tiley, J. S., "Modeling of Microstructure Property Relationships in Ti-6Al-4V," Ph.D. Thesis, Ohio State University, 2002.
13 Kobryn, P. A. and Semiatin, S. L., "Mechanical Properties of Laser- Deposited Ti-6Al-4V," Proc. of the Solid Freeform Fabrication, 2001.
14 David, S. A. and Vitek, J. M., "Correlation between Solidification Parameters and Weld Microstructure," International Materials Reviews, Vol. 34, No. 1, pp. 213-245, 1989.   DOI
15 AMS 2801B, "Heat Treatment of Titanium Alloy Parts," Aerospace Materials Specification, 2003.
16 ASTM F2924, "Standard Specification for Additive Manufacturing Titanium-6 Aluminum-4 Vanadium with Powder Bed Fusion," ASTM International, 2014.
17 Kruth, J. P., Badrossamay, M., Yasa, E., Deskers, J., Thijs, L., et al., "Part and Material Properties in Selective Laser Melting of Metals," Proc. of the International Symposium on Electromachining, 2010.
18 Ducheyne, P., Kohn, D., and Smith, T. S., "Fatigue Properties of Cast and Heat Treated Ti-6Al-4V Alloy for Anatomic Hip Prostheses," Biomaterials, Vol. 8, No. 3, pp. 223-227, 1987.   DOI
19 AMS 4911L, "Titanium Alloy, Sheet, Strip, and Plate Ti-6Al-4V Annealed," Aerospace Materials Specification, 2007.
20 Vandenbroucke, B. and Kruth, J.-P., "Selective Laser Melting of Biocompatible Metals for Rapid Manufacturing of Medical Parts," Rapid Prototyping Journal, Vol. 13, No. 4, pp. 196-203, 2007.   DOI
21 Kruth, J.-P., Levy, G., Klocke, F., and Childs, T., "Consolidation Phenomena in Laser and Powder-Bed Based Layered Manufacturing," CIRP Annals, Vol. 56, No. 2, pp. 730-759, 2007.   DOI
22 Levy, G. N., "The Role and Future of the Laser Technology in the Additive Manufacturing Environment," Physics Procedia, Vol. 5, pp. 65-80, 2010.   DOI
23 Gibson, I., Rosen, D. W., and Stucker, B., "Additive Manufacturing Technologies," Springer, 2014.
24 Levy, G. N., Schindel, R., and Kruth, J.-P., "Rapid Manufacturing and Rapid Tooling with Layer Manufacturing (LM) Technologies, State of the Art and Future Perspectives," CIRP Annals-Manufacturing Technology, Vol. 52, No. 2, pp. 589-609, 2003.   DOI
25 Ahn, D.-G., "Direct Metal Additive Manufacturing Processes and their Sustainable Applications for Green Technology: A Review," International Journal of Precision Engineering and Manufacturing- Green Technology, Vol. 3, No. 4, pp. 381-395, 2016.   DOI
26 Simonelli, M., Tse, Y. Y., and Tuck, C., "Effect of the Build Orientation on the Mechanical Properties and Fracture Modes of SLM Ti-6Al-4V," Materials Science and Engineering: A, Vol. 616, pp. 1-11, 2014.   DOI
27 Vandenbroucke, B. and Kruth, J.-P., "Selective Laser Melting of Biocompatible Metals for Rapid Manufacturing of Medical Parts," Rapid Prototyping Journal, Vol. 13, No. 4, pp. 196-203, 2007.   DOI
28 Qiu, C., Adkins, N. J., and Attallah, M. M., "Microstructure and Tensile Properties of Selectively Laser-Melted and of Hiped Laser- Melted Ti-6Al-4V," Materials Science and Engineering: A, Vol. 578, pp. 230-239, 2013.   DOI
29 Thijs, L., Verhaeghe, F., Craeghs, T., Van Humbeeck, J., and Kruth, J.-P., "A Study of the Microstructural Evolution during Selective Laser Melting of Ti-6Al-4V," Acta Materialia, Vol. 58, No. 9, pp. 3303-3312, 2010.   DOI