Affiliation:
1. 77649 Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham , Coimbatore , India
2. Materials Science and Engineering , Arizona State University , Tempe , USA
Abstract
Abstract
Additive manufacturing enables the fabrication of versatile and cost-effective metallic-alloy components from a digital data model. This study explores the prospects of selective laser melting (SLM), an additive manufacturing technique, for fabricating Ti6Al4V alloy components from Ti6Al4V alloy powders. Selective laser melting parameters, such as laser power, scanning speed, powder thickness, hatching space, and scanning strategy, are carefully selected through a series of experiments. The metallurgical characteristics (microstructure, grain orientation, and phase composition), microhardness, and creep performance of the as-fabricated specimens are tested and analyzed. The kinetics of phase transformation and rupture mechanism are determined using advanced instrumental characterization tools, such as field emission scanning electron microscope, energy dispersive X-ray spectroscope, X-ray diffractometer, and transmission electron microscope.
Reference38 articles.
1. M. Govindaraju, K. P. Rao, C. Uday, K. Balasubramanian, and C. Ravindran, “Friction stir processed rare earth containing magnesium alloy for high temperature application,” Mater. Sci. Forum, vol. 710, pp. 235–240, 2012. https://doi.org/10.4028/www.scientific.net/MSF.710.235.
2. M. Govindaraju, K. R. Prasad, U. Chakkingal, and K. Balasubramanian, “Effect of distance between passes in friction stir processing of magnesium alloy,” Adv. Mater. Res., vol. 585, pp. 397–401, 2012, https://doi.org/10.4028/www.scientific.net/AMR.585.397.
3. M. Thöne, S. Leuders, A. Riemer, T. Tröster, and H. Richard, “Influence of heat-treatment of selective laser melting products-eg Ti6Al4V,” in 2012 International Solid Freeform Fabrication Symposium, Austin, Texas, USA, University of Texas at Austin, 2012.
4. E. Wycisk, C. Emmelmann, S. Siddique, and F. Walther, “High cycle fatigue (HCF) performance of Ti-6Al-4V alloy processed by selective laser melting,” Adv. Mater. Res., vol. 816, pp. 134–139, 2013, https://doi.org/10.4028/www.scientific.net/AMR.816-817.134.
5. B. Vrancken, L. Thijs, J.-P. Kruth, and J. Van Humbeeck, “Heat treatment of Ti6Al4V produced by selective laser melting: microstructure and mechanical properties,” J. Alloys Compd., vol. 541, pp. 177–185, 2012, https://doi.org/10.1016/j.jallcom.2012.07.022.