Abstract
Titanium is a high-performance material with relatively high specific mechanical strength, high fracture toughness, low elastic modulus, and high corrosion resistance with important applications in aerospace, medical, and chemical industries. Nowadays, developing and fabrication of titanium-based structures by means of additive manufacturing technologies, especially robotic assisted deposition, is exceptionally attractive and challenging. The study was aimed to evaluate the effects of sintering conditions on microstructure and mechanical behaviour of complex robotic deposited porous titanium structures. The results demonstrated that the mechanical behaviour of such structures can be determined not only by their macrodesign, but also microstructural features, such microporosity and grain size controlled by sintering conditions, have an effect on it. The stiffest titanium structure with the densest filaments and with elastic modulus in a range of that of human trabecular bone was obtained by sintering at 1400 °C for 10 h.
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