Mean strain effects and microstructural observation during in-vitro fatigue testing of NiTi


Morgan, N.B., Painter, J. and Moffat, A.J. (2003) Mean strain effects and microstructural observation during in-vitro fatigue testing of NiTi In Proceedings of the International Conference on Shape Memory and Superelastic Technologies (SMST-2003). Monterey Institute of Advanced Studies., pp. 303-310.

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Description/Abstract

The non-linear nature of the superelastic phase transformation in NiTi means that conventional fatigue life theory is difficult to apply. The volume fraction of martensite/parent phase and its role in the fatigue mechanism is not understood. This paper considers the fatigue life of superelastic NiTi alloys when tested at 2Hz in Ringers solution. In agreement with other researchers [1] [2] it was found that low alternating strains but high mean strain values resulted in the longest fatigue lives. To support the mechanical testing data, optical and electron microscopy was used to investigate the mechanism of fatigue and the role of the NiTi microstructure.

Item Type: Conference or Workshop Item (Paper)
ISBNs: 0966050835 (print)
Venue - Dates: SMST-2003: International Conference on Shape Memory and Superelastic Technologies, 2003-05-01 - 2003-05-01
Subjects:
Organisations: Engineering Mats & Surface Engineerg Gp
ePrint ID: 49958
Date :
Date Event
May 2003Published
Date Deposited: 07 Jan 2008
Last Modified: 16 Apr 2017 18:14
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/49958

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