Abstract
A new type of medical guide wire with functionally graded hardness from the tip to the end was developed with the use of Cu-Al-Mn-based alloys. The superelasticity (SE) of the Cu-Al-Mn-based alloys in the tip is drastically improved by controlling the grain size, whereas the end of the wire is hardened using bainitic transformation by aging at around 200-400 °C. Therefore, the tip of the guide wire shows a superelasticity and its end has high stiffness. This guide wire with functionally graded characteristics shows excellent pushability and torquability, superior to that of the Ni-Ti guide wire.
| Original language | English |
|---|---|
| Pages (from-to) | 64-69 |
| Number of pages | 6 |
| Journal | Journal of Biomedical Materials Research - Part B Applied Biomaterials |
| Volume | 69 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2004 Apr 15 |
Keywords
- Bainitic transformation
- Cu-Al-Mn-based shape memory alloy
- Guide wire
- High stiffness
- Superelasticity
ASJC Scopus subject areas
- Biomaterials
- Biomedical Engineering