Selective laser melting of Ti-24Nb-4Zr-8Sn alloy for biomedical applications
Nova Science Publishers
Faculty of Health, Engineering and Science
School of Engineering
Titanium alloys are receiving a great deal of attention in both medical and dental applications. For patients with extensive bone loss or deformities, standard off-the-shelf orthopedic implants often do not provide an acceptable clinical solution. In order to successfully treat such patients, customised devices with the external geometry derived from the patient's Computed Tomography (CT) or Magnetic Resonance Imaging (MRI) data must be manufactured. Selective laser melting (SLM) could provide an ideal platform for the creation of these customized devices. SLM is a powder-based, layeradditive manufacturing technology, whereby parts are built by melting selected areas of a powder layer using high intensity laser beam. Three dimensional parts are then manufactured by sequential production of these two dimensional layers. SLM facilitates the manufacture of parts with almost no geometric constraints and is economically feasible down to a batch size of one. This chapter reviews the recent progress of the application of selective laser melting in the manufacture of Ti-24Nb-4Zr-8Sn alloy for biomedical applications, including the effect of processing parameters on the density, microstructure and properties in several biomedical titanium alloys, as well as the manufacture of an example acetabular cup.