Optimisation of processing and properties of medical grade Nitinol wire
- 1 January 2000
- journal article
- research article
- Published by Taylor & Francis Ltd in Minimally Invasive Therapy & Allied Technologies
- Vol. 9 (2), 107-118
- https://doi.org/10.3109/13645700009063057
Abstract
The purpose of this paper is to review the current processing and resultant properties of standard Nitinol wire for guide-wire applications. Optimised Ti-50.8at%Ni wire was manufactured according to industry standards by precise control of the composition, cold work and continuous strain-age annealing. Mechanical properties of this wire are reported from -100°C to 200°C to demonstrate the effects of test temperature. Within the ‘superelastic window’ the plateau stresses are linearly related to test temperature. Additional ageing treatments can be used as a tool to fine-tune transformation temperatures and mechanical properties. A review of the fatigue properties of thermomechanically-treated Nitinol wire shows that they are affected by test temperature, stress and strain.Keywords
This publication has 9 references indexed in Scilit:
- Fatigue life of Ti–50 at.% Ni and Ti–40Ni–10Cu (at.%) shape memory alloy wiresMaterials Science and Engineering: A, 1999
- Ultrasound measurement of the luminal diameter of the abdominal aorta and iliac arteries in patients without vascular diseaseJournal of Vascular Surgery, 1993
- Thermal and Stress Cycling Effects and Fatigue Properties of Ni-Ti AlloysPublished by Elsevier BV ,1990
- An Engineer's Perspective of PseudoelasticityPublished by Elsevier BV ,1990
- Measurable Changes Concomitant with the Shape Memory Effect TransformationPublished by Elsevier BV ,1990
- Introduction to the R-Phase TransitionPublished by Elsevier BV ,1990
- Ni-Ti Based Shape Memory AlloysPublished by Elsevier BV ,1990
- Precipitation processes in near-equiatomic TiNi shape memory alloysMetallurgical Transactions A, 1986
- Fatigue of NITI thermoelastic martensitesActa Metallurgica, 1979