Effect of Strain Rate and Measuring Temperature on Elastocaloric Effect and Multi-caloric Properties of Co37.5 Ni34.5 Al28 Paramagnetic Shape Memory Alloy

Khan, Muhammad Tahir (2021) Effect of Strain Rate and Measuring Temperature on Elastocaloric Effect and Multi-caloric Properties of Co37.5 Ni34.5 Al28 Paramagnetic Shape Memory Alloy. mtahir.khan@riphah.edu.pk, 74. pp. 3163-3169. ISSN 0975-1645

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Abstract

In this study, the elastocaloric and magne�tocaloric effects in a paramagnetic shape memory alloy,
i.e., Co37.5 Ni34.5 Al28 alloy were investigated. The study
reveals that the alloy shows an elastocaloric effect with a
temperature change of 2.2 K under 400 Mpa keeping a
strain rate of 0.25 s-1
. It shows a temperature change of
over 1 K within a temperature span of 50 K including the
room temperature. Under the same stress, with a strain rate
of 0.50 s-1
, the material shows a temperature change of
2.7 K and gives more than 1 K temperature change within
a span of 75 K including the ambient temperature. How�ever, increasing the strain rate to 0.62 s-1 causes the
material to break down. This shows that under a certain
limit, the increase in the strain rate increases the elas�tocaloric temperature change and enhances the temperature
window of the material along with the peak shifts toward
lower measuring temperatures. Moreover, the study dedu�ces that the material also exhibits a magnetocaloric effect.
The study also reveals that both of the effects show temperature changes with the same sign and in the same
region of the working temperature, thus enhancing one
another

Item Type:	Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Engineering and Applied Sciences (FEAS) > Department of Basic Sciences Islamabad
Depositing User:	Tahir Muhammad Tahir
Date Deposited:	09 Dec 2021 15:39
Last Modified:	09 Dec 2021 15:39
URI:	http://research.riphah.edu.pk/id/eprint/1740

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