<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The aim of the present paper is to examine both the fatigue behaviour and the phase transition mechanisms of an equiatomic pseudo-elastic NiTi Shape Memory Alloy through cyclic tests (up to 100 loading cycles). More precisely, miniaturised dog-bone specimens are tested by using a customised testing machine and the contents of both austenite and martensite phase are experimentally measured by means of X-Ray diffraction (XRD) analyses. On the basis of such experimental results in terms of martensite content, an analytical model is here formulated to correlate the stress-strain relationship to the phase transition mechanisms. Finally, a validation of the present model by means of experimental data pertaining the stress-strain relationship is performed.</p></abstract>

The aim of the present paper is to examine both the fatigue behaviour and the phase transition mechanisms of an equiatomic pseudo-elastic NiTi Shape Memory Alloy through cyclic tests (up to 100 loading cycles). More precisely, miniaturised dog-bone specimens are tested by using a customised testing machine and the contents of both austenite and martensite phase are experimentally measured by means of X-Ray diffraction (XRD) analyses. On the basis of such experimental results in terms of martensite content, an analytical model is here formulated to correlate the stress-strain relationship to the phase transition mechanisms. Finally, a validation of the present model by means of experimental data pertaining the stress-strain relationship is performed.

Mechanical Behaviour and Phase Transition Mechanisms of a Shape Memory Alloy by Means of a Novel Analytical Model

Department of Engineering and Architecture

Department of Civil and Mechanical Engineering

University of Cassino and Lazio Meridionale

Department Chemical Engineering Materials Environment

Acta Mechanica et Automatica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The aim of the present paper is to examine both the fatigue behaviour and the phase transition mechanisms of an equiatomic pseudo-elastic NiTi Shape Memory...

Mechanical Behaviour and Phase Transition Mechanisms of a Shape Memory Alloy by Means of a Novel Analytical Model

Published Online: Jul 17, 2018

Page range: 105 - 108

Received: Apr 19, 2017

Accepted: Jun 08, 2018

DOI: https://doi.org/10.2478/ama-2018-0017

Keywords
Fatigue Behaviour, Phase Transition Mechanisms, Shape Memory Alloy, Tensile Cyclic Test, X-Ray Diffraction Analyses

© 2018 Andrea Carpinteri et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mechanical Behaviour and Phase Transition Mechanisms of a Shape Memory Alloy by Means of a Novel Analytical Model

Published Online: Jul 17, 2018

Page range: 105 - 108

Received: Apr 19, 2017

Accepted: Jun 08, 2018

DOI: https://doi.org/10.2478/ama-2018-0017

KeywordsFatigue Behaviour, Phase Transition Mechanisms, Shape Memory Alloy, Tensile Cyclic Test, X-Ray Diffraction Analyses

© 2018 Andrea Carpinteri et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Fatigue Behaviour, Phase Transition Mechanisms, Shape Memory Alloy, Tensile Cyclic Test, X-Ray Diffraction Analyses