Dresden 2014 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 50: Mechanical properties III - Evolution & deformation of microstructure

MM 50.6: Talk

Thursday, April 3, 2014, 11:30–11:45, IFW B

High-strength titanium-based materials processed by selective laser melting — •Hooyar Attar^{1, 2}, Mariana Calin², LaiChang Zhang¹, and Jürgen Eckert^{2, 3} — ¹Edith Cowan University, Perth, WA 6027, Australia — ²IFW Dresden, Institute for Complex Materials, P.O. Box 270116, D-01171 Dresden, Germany — ³TU Dresden, Institute of Materials Science, D-01062 Dresden, Germany

Titanium and its alloys are widely used in biomedical industries. Improvement of their mechanical properties plays an important role in enhancing the biomechanical compatibility of Ti-based implants, leading to increase their longevity in the human system. The traditional processing technologies utilized for manufacturing medical devices are usually highly time and material consuming processing steps. Selective laser melting (SLM)is providing the ideal platform for producing components with almost no geometric constraints and is economically feasible down to a batch size of one. In the present work, optimal manipulation of SLM parameters were used to produce high strength commercially pure titanium (CP-Ti) and Ti-TiB composites with superior properties than those of conventionally processed. Results showed that mechanical properties of SLM-processed CP-Ti have been significantly increased compared to those of traditionally manufactured. The noticeable improvement of mechanical properties of SLM-processed CP-Ti is result of ultrafine martensitic grains formed during the SLM process. Moreover, micro-hardness and compressive strengths of the CP-Ti were increased greatly when it was reinforced with TiB particles.