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Mechanical Properties Of Solid-State Resistance Welded Nitinol - 304 Stainless Steel Joints In Peripheral Guide Wires, Jennifer Rowe
Mechanical Properties Of Solid-State Resistance Welded Nitinol - 304 Stainless Steel Joints In Peripheral Guide Wires, Jennifer Rowe
Materials Engineering
Abbott Vascular manufactures medical guide wires that consist of 304 stainless steel wire joined to superelastic nickel titanium (Nitinol) wire by a solid-state resistance butt welding process. The objective of this project was to develop a deeper understanding of the mechanical properties of the welds in the guide wires. The wires tested were manufactured using two different processes and then ground to various diameters in the weld region. Vickers microhardness measurements were collected in the longitudinal direction across the heat-affected zones of the welds, as well as the transverse direction across the diameters of the welds. Micrographs of the welds …