Differential scanning calorimetry response of aged NiTiHfPd shape memory alloys

Emre Acar; Musa Çalışkan; Haluk E. Karaca

doi:10.1007/s00339-019-2543-7

Differential scanning calorimetry response of aged NiTiHfPd shape memory alloys

Emre Acar, Musa Çalışkan, Haluk E. Karaca

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Phase transformation characteristics of an aged NiTiHfPd shape memory alloy were investigated through thermal cycling experiments via the differential scanning calorimetry technique. Effects of heating/cooling rate and thermal cycling on the phase transformation temperatures, enthalpies, and thermal hysteresis values were revealed. It was found that phase transformation temperatures and thermal hysteresis values alter considerably with thermal cycling. The transformation temperatures were found to be above 80 °C for all the heating rates, which makes this alloy a promising candidate for high-temperature applications in the selected aging conditions.

Original language	English
Article number	239
Journal	Applied Physics A: Materials Science and Processing
Volume	125
Issue number	4
DOIs	https://doi.org/10.1007/s00339-019-2543-7
State	Published - Apr 1 2019

Bibliographical note

Funding Information:
Acknowledgements This work was supported in part by the NSF

Funding Information:
CMMI-15-38665, the NASA EPSCOR program under Grant no: NNX-11AQ31A, KY EPSCoR RID program under Grant no: 3049024332, and Erciyes University under Grant no: FBA-2017-7604.

Publisher Copyright:
© 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

ASJC Scopus subject areas

Chemistry (all)
Materials Science (all)

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abstract = "Phase transformation characteristics of an aged NiTiHfPd shape memory alloy were investigated through thermal cycling experiments via the differential scanning calorimetry technique. Effects of heating/cooling rate and thermal cycling on the phase transformation temperatures, enthalpies, and thermal hysteresis values were revealed. It was found that phase transformation temperatures and thermal hysteresis values alter considerably with thermal cycling. The transformation temperatures were found to be above 80 °C for all the heating rates, which makes this alloy a promising candidate for high-temperature applications in the selected aging conditions.",

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Differential scanning calorimetry response of aged NiTiHfPd shape memory alloys

Abstract

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