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Welding methods bond Nitinol to stainless steel for implants.(Welding/Joining)

Advanced Materials & Processes,  August, 2004  

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A technique for welding Nitinol nickel-titanium shape-memory alloy to stainless steel for medical devices is under development at the Edison Welding Institute, Columbus, Ohio. EWI's approach is aimed at overcoming some of the known difficulties, such as the formation of brittle intermetallic phases usually found in Nitinol-stainless steel fusion welds.

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EWI engineers have developed a process, now patent-pending, that significantly improves weld strength. The process has been successfully demonstrated in laboratory settings with wire-to-wire butt joints. In these experiments, the ...

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