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An Investigation of Diverse Surface Finishes on Fatigue Properties of Superelastic Nitinol Wire

From Fort Wayne Metals, Inc.
 

 

The impact of surface finish on rotary beam fatigue life of 0.323 mm Nitinol (Ni 56wt%-Ti) wire is studied. In preparation of the wire samples, processing parameters such as cold work reduction and annealing were held constant for all surface conditions investigated. Various Niti wire surfaces such as light oxide, dark oxide, black oxide, etched, pickled, mechanically polished, and electropolished are evaluated.

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Product Announcements
Fort Wayne Metals, Inc. - Nitinol Wire Products
Fort Wayne Metals manufactures three medical grades (NiTi#1, NiTi#2 and NiTi#4) of Nickel-Titanium or Nitinol wire products available in either the cold worked (CW) condition ready for heat treatment... (read more)
Fort Wayne Metals, Inc. - Helical Hollow Strand® (HHS) Wire
HHS is a Fort Wayne Metals stranded wire with an open center working channel. HHS is manufactured using wire material drawn by Fort Wayne Metals. HHS has excellent whip free characteristics, and can... (read more)
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While not offering all of the benefits of electropolishing, chemical passivation will improve the corrosion resistance of stainless steel. The presence of exogenous surface contaminates may disrupt... (read more)
Acme Wire Products Co., Inc. - Coating and Finishes
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All Metals & Forge - Services and Solutions
At All Metals & Forge, LLC, the combination of Inventory, Product Knowledge and a myriad of Value Added Services combine to provide our clients with an AM&F Solution ®. When your normal... (read more)
Central Electropolishing Co., Inc. - Improvement of Fatique in Stainless Springs
Improving the Fatigue life of springs via Electropolishing. Central Electropolishing has state of the art, automated tooling available to do any quantity of spring in a timely manner. We polish all... (read more)
Rogue Valley Microdevices, Inc. - PVD Metals, Sputtered Cu, Ti, Ta, Al, Ni, W, Cr
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Rogue Valley Microdevices, Inc. - PVD Metals, Sputtered Al, Ti, Ta, Cu, Ni, W, Cr
Rogue Valley Microdevices foundry can provide Sputtered Metals and Sputtered Dielectrics. Our sputtering capabilities include PVD Metals, PVD Dielectrics, and Evaporated Metals including but not... (read more)
 
Topics of Interest
In continuation of a previous comparison of the influence of melt practice and strain amplitude on Ni 56wt%-Ti 0.267 mm wire, this investigation explores the fatigue properties at 0.127 mm of the same... (Read More)
Fatigue information has been reliable in predicting wire critical structural integrity. The aim of this study is to expound on the characterization technique of rotary beam fatigue testing (RBT). By... (Read More)
The impact of original melt practice and strain amplitude on Ni 56wt%-Ti wire was investigated using rotary beam fatigue testing. The fatigue tests were conducted in the superelastic condition above... (Read More)
Homogeneous 177-lm diameter nanocrystalline Nitinol wires were produced and compared to microcrystalline Nitinol from equivalent ingot stock. Property measurement was carried out using cyclic tension... (Read More)
The influence of deformation temperature on mechanical properties of Shape Memory and Superelastic Nickel-Titanium (Nitinol) alloys has been studied and is well documented. In determining the... (Read More)
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