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      A simple model to calculate the microstructure evolution in a NiTi SMA

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          Abstract

          Shape memory alloys (SMAs) are a wide class of materials characterized by the property to recover the initial shape. This property is due to ability of alloys to change the microstructure from a “parent” microstructure (usually called “Austenite”) to a “product” microstructure (usually called “Martensite”). Considering the tensile resistance, SMAs stress strain curves are characterized by a sort of plateau were the transformations from Austenite to Martensite (in loading condition) and from Martensite to Austenite (in unloading condition) take place. In this work a simple model to predict the microstructure modification has been proposed and verified with an equiatomic NiTi alloy characterized by a pseudo-elastic behavior.

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          Most cited references12

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          Physical metallurgy of Ti–Ni-based shape memory alloys

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            Recent developments in the research of shape memory alloys

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              Thermomechanical aspects of NiTi

              J. Shaw (1995)
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                Author and article information

                Journal
                Frattura ed Integrità Strutturale
                Gruppo Italiano Frattura
                01 April 2018
                : 12
                : 44
                Affiliations
                [1 ] Università di Cassino e del Lazio Meridionale, DICeM, Italy
                [2 ] University of Rome “La Sapienza”, DICMA, via Eudossiana 18, Roma, Italy
                Article
                4408029d88d04fd0b708bca6ac3b26e9
                10.3221/IGF-ESIS.44.14
                1aa0f5a4-17f2-4535-b56f-def2d64e09d4

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

                Categories
                Mechanical engineering and machinery
                TJ1-1570
                Structural engineering (General)
                TA630-695

                Materials technology,Materials properties,Materials characterization,Engineering,Civil engineering,Mechanical engineering
                Shape memory alloy,Austenite,Martensite,Microstructure transitions

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