Austenite-martensite phase transformation of biomedical Nitinol by ball burnishing

C. H. Fu; M. P. Sealy; Y. B. Guo; X. T. Wei

doi:10.1016/j.jmatprotec.2014.07.019

Austenite-martensite phase transformation of biomedical Nitinol by ball burnishing

C. H. Fu, M. P. Sealy, Y. B. Guo, X. T. Wei

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

Nitinol has received considerable attention for biomedical and aerospace applications due to its shape memory and superelastic properties. Shape memory and superelasticity are induced in Nitinol by transforming austenite into martensite. Austenite can transform to martensite by applying stress or heat. One promising method to initiate a stress induced phase transformation is ball burnishing. In this study, phase transformation of Nitinol (Ni _50.8Ti_49.2) (at.%) by ball burnishing at various forces was investigated. Burnishing tracks were characterized and microstructures in the subsurface were investigated. Also, a corresponding burnishing simulation was performed to gain insight into the phase transformation mechanism of Nitinol by burnishing.

Original language	English (US)
Pages (from-to)	3122-3130
Number of pages	9
Journal	Journal of Materials Processing Technology
Volume	214
Issue number	12
DOIs	https://doi.org/10.1016/j.jmatprotec.2014.07.019
State	Published - Dec 2014
Externally published	Yes

Keywords

Burnishing
Medical device
Nitinol
Phase transformation
Surface integrity

ASJC Scopus subject areas

Ceramics and Composites
Computer Science Applications
Metals and Alloys
Industrial and Manufacturing Engineering

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10.1016/j.jmatprotec.2014.07.019

Cite this

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title = "Austenite-martensite phase transformation of biomedical Nitinol by ball burnishing",

abstract = "Nitinol has received considerable attention for biomedical and aerospace applications due to its shape memory and superelastic properties. Shape memory and superelasticity are induced in Nitinol by transforming austenite into martensite. Austenite can transform to martensite by applying stress or heat. One promising method to initiate a stress induced phase transformation is ball burnishing. In this study, phase transformation of Nitinol (Ni 50.8Ti49.2) (at.%) by ball burnishing at various forces was investigated. Burnishing tracks were characterized and microstructures in the subsurface were investigated. Also, a corresponding burnishing simulation was performed to gain insight into the phase transformation mechanism of Nitinol by burnishing.",

keywords = "Burnishing, Medical device, Nitinol, Phase transformation, Surface integrity",

author = "Fu, {C. H.} and Sealy, {M. P.} and Guo, {Y. B.} and Wei, {X. T.}",

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AU - Fu, C. H.

AU - Sealy, M. P.

AU - Guo, Y. B.

AU - Wei, X. T.

N1 - Funding Information: The work has been supported by NSF (Grant # 1234696 ).

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Y1 - 2014/12

N2 - Nitinol has received considerable attention for biomedical and aerospace applications due to its shape memory and superelastic properties. Shape memory and superelasticity are induced in Nitinol by transforming austenite into martensite. Austenite can transform to martensite by applying stress or heat. One promising method to initiate a stress induced phase transformation is ball burnishing. In this study, phase transformation of Nitinol (Ni 50.8Ti49.2) (at.%) by ball burnishing at various forces was investigated. Burnishing tracks were characterized and microstructures in the subsurface were investigated. Also, a corresponding burnishing simulation was performed to gain insight into the phase transformation mechanism of Nitinol by burnishing.

AB - Nitinol has received considerable attention for biomedical and aerospace applications due to its shape memory and superelastic properties. Shape memory and superelasticity are induced in Nitinol by transforming austenite into martensite. Austenite can transform to martensite by applying stress or heat. One promising method to initiate a stress induced phase transformation is ball burnishing. In this study, phase transformation of Nitinol (Ni 50.8Ti49.2) (at.%) by ball burnishing at various forces was investigated. Burnishing tracks were characterized and microstructures in the subsurface were investigated. Also, a corresponding burnishing simulation was performed to gain insight into the phase transformation mechanism of Nitinol by burnishing.

KW - Burnishing

KW - Medical device

KW - Nitinol

KW - Phase transformation

KW - Surface integrity

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Austenite-martensite phase transformation of biomedical Nitinol by ball burnishing

Abstract

Keywords

ASJC Scopus subject areas

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