Effect of heat-treatment on phase transition temperatures of a superelastic NiTi alloy for medical use

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)321-324
Journal / PublicationMaterials Science Forum
Volume394-395
Publication statusPublished - 2002
Externally publishedYes

Conference

TitleProceedings of the International Conference on Shape Memory and Superelastic Technologies and Shape Memory Materials (SMST-SMM 2001)
PlaceChina
CityKumning
Period2 - 6 September 2001

Link(s)

Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-0036433887&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(35ce9d69-1b6c-4771-8407-6260a37952a0).html

Abstract

Surgical correction of scoliosis typically uses stainless steel or titanium alloy spinal instrumentation to straighten the scoliotic spine by 70% only. Our aim is to develop a method to overcome this by using an implantable superelastic (SE) nickel-titanium (NiTi) alloy rod, which will impose a continuous gradual correction force to the spine after the surgery so as to achieve a superior correction. More than 75 specimens made of a Ti-50.0 at% Ni alloy were treated by different heat treatment routes. The Austenitic transition temperature of the NiTi alloy can be adjusted to be available at 37.5°C by altering the heat treatment parameters: time and temperature of heat treatment. The experimental results showed that the heat treatment temperature should set between 400-500°C and the heat treatment time should be less than 60 minutes for the alloy.

Research Area(s)

  • Heat Treatment, NiTi Shape-Memory Alloy, Transformation Temperature

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transition temperat... INIS
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heat treatments INIS
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phase transformatio... INIS
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nickel INIS
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titanium alloys INIS
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Phase Transition Te... Keyphrases
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Superelastic Keyphrases
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Medical Use Keyphrases
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Nickel-titanium All... Keyphrases
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Heat Treatment Effe... Keyphrases
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Citation Format(s)

[ RIS ] [ BibTeX ]
Effect of heat-treatment on phase transition temperatures of a superelastic NiTi alloy for medical use. / Yeung, K. W K; Chung, C. Y.; Cheung, K. M C et al.
In: Materials Science Forum, Vol. 394-395, 2002, p. 321-324.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review