Medical - Fusing Ni-Ti to Dissimilar Materials Ni-Ti handles continuous distortion and kinking. It presents many advantageous properties such as super-elasticity, corrosion resistance and biocompatibility. In addition, the shape, stiffness and other properties of Nitinol can be controlled by chemical composition, heat treatment and temperature. The Challenge Ni-Ti is a very versatile material, but has rather difficult weld-ability and is expensive. For many medical applications it is beneficial to use Ni-Ti for only a portion of the device, and weld a different less expensive material such as stainless steel for the remaining portion of the device. This combination enables for cost reduction, because of Nitinol’s high cost, and additionally provides for manufacturing improvement

Join for free to read