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Beta titanium alloys are promising materials for biomedical and aerospace applications due to their low elastic modulus, high strength, and biocompatibility. For such applications, however, a thorough understanding of their fatigue behaviour is essential. This study provides an initial insight into the fatigue properties of two additively processed beta titanium alloys (Ti-13Nb-13Zr and Ti-15Mo) produced from recycled feedstock. Both alloys were manufactured by recycling titanium scrap (offcuts and similar waste), followed by powder preparation for 3D printing of fatigue test specimens. The aim was to evaluate whether the combination of recycling and additive manufacturing can deliver adequate fatigue performance. Basic fatigue tests were conducted on a limited number of samples, focusing on comparison of the two alloys and complemented by fractographic analysis and evaluation of the results with respect to available literature, which remains scarce for fatigue behaviour of the investigated beta titanium alloys produced via additive manufacturing. The integration of additive processing with the aspect of recycling makes this work a unique contribution to the field. Although the limited number of specimens did not allow the construction of a complete S N curve, the obtained results confirm the potential of recycled beta titanium alloys for applications subjected to cyclic loading and indicate directions for further optimisation of the manufacturing route.
Keywords: beta titanium alloys, recycling process, additive manufacturing, fetigue behavior© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.