ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The transformation kinetics formulation is the principal factor underlying the constitutivemodel of shape memory alloys. Therefore, the transformation kinetics formulation, which isapplicable to any status of stress and temperature, is essential for predicting the material behavior ofSMAs. In this work, we show that the transformation kinetics of the Brinson model, which is themost widely used 1-dimensional model, has shortcomings under certain stress and temperaturehistories. In addition, we propose a modified transformation kinetics model that can be used for anystress or temperature conditions. The martensite transformation kinetics is modified so that thetransformation from austenite into temperature-induced martensite, due to the decrement oftemperature, is coupled with a transformation from austenite or temperature-induced martensite intostress-induced martensite, due to the increment of the stress. Through this modification, thesuggested model can simulate the behavior of shape memory alloy materials under arbitrarilychanged circumstances at every stress-temperature region
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.326-328.1475.pdf
