Publication
Title
The effect of chemical composition on enthalpy and entropy changes of martensitic transformations in binary NiTi shape memory alloys
Author
Abstract
In the present research work the binary NiTi alloys with various compositions in the range of 50.351 at.% Ni were used. Samples have been annealed at 850 °C for 15 min and then quenched in water. In order to characterize transformation temperatures and enthalpy changes of the forward and the reverse martensitic transformation, Differential Scanning Calorimetric (DSC) experiments were performed. The enthalpy and entropy changes as a function of Ni atomic content have been thermodynamically investigated. Results show that enthalpy and entropy changes of martensitic transformation decrease when Ni atomic content increases. The variation of enthalpy and entropy of martensitic transformation with Ni content in binary NiTi alloys were explained by thermodynamic parameters and electron concentration of alloy (e/a) respectively.
Language
English
Source (journal)
Journal of alloys and compounds. - Amsterdam
Publication
Amsterdam : 2009
ISSN
0925-8388
Volume/pages
487(2009), p. 363-366
ISI
000272521900073
Full text (Publishers DOI)
Full text (publishers version - intranet only)
UAntwerpen
Faculty/Department
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 09.01.2015
Last edited 26.05.2017