Journal
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
Volume 72A, Issue 2, Pages 190-199Publisher
WILEY
DOI: 10.1002/jbm.a.30214
Keywords
nitinol; texture; stents
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The superelastic/shape-memory material, Nitinol, an approximately equiatomic alloy of Ni and Ti, is rapidly becoming one of the most important metallic implant materials in the biomedical industry, in particular for the manufacture of endovascular stents. As such stents are invariably laser-machined from Nitinol tubes or sheets rolled into tubes, it is important to fully understand the physical phenomena that may affect the mechanical behavior of this material. With tubing and plate, one major issue is crystallographic texture, which can play a key role in influencing the mechanical properties of Nitinol. In this article, we present a study on how geometry and heat treatment can affect the texture of Nitinol, with specific quantification of the texture of Nitinol tube used for the production of endovascular stents. (C) 2004 Wiley Periodicals, Inc.
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