Journal
SCRIPTA MATERIALIA
Volume 112, Issue -, Pages 106-108Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2015.09.024
Keywords
Isothermal martensitic transformation; Shape memory alloys (SMA); Differential scanning calorimetry (DSC); Titanium-nickel alloy; Phase transformation kinetics
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Funding
- Saint Petersburg State University [0.37.177.2014, 637.147.2014]
- Russian Science Foundation [14-22-00098]
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Isothermal martensitic transformation from cubic B2 phase to monoclinic B19' phase is observed by calorimetric measurement at a constant temperature that is higher than the start temperature of the forward martensitic transformation found during continuous cooling. The dependences of the alloy volume undergone the forward transformation under isothermal condition on the holding temperature and time are obtained. It is assumed that the realization of the phase transformation under isothermal conditions is caused by a relaxation of elastic energy accumulated in the sample due to the formation of quasi-static strain nanodomains. (C) 2015 Elsevier Ltd. All rights reserved.
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