Tuning the temperature range of superelastic Ni-Ti alloys for elastocaloric cooling via thermal processing

Yamazaki, Takahiro; Montagnoli, Andre L.; Young, Marcus L.; Takeuchi, Ichiro

doi:10.1088/2515-7655/accd21

Title: Tuning the temperature range of superelastic Ni-Ti alloys for elastocaloric cooling via thermal processing

Abstract

Abstract Caloric cooling enlisting solid-state refrigerants is potentially a promising eco-friendly alternative to conventional cooling based on vapor compression. The most common refrigerant materials for elastocaloric cooling to date are Ni-Ti based superelastic shape memory alloys. Here, we have explored tuning the operation temperature range of Ni _50.8 Ti _49.2 for elastocaloric cooling. In particular, we have studied the effect of thermal treatments (a.k.a. aging) on the transformation temperature, superelasticity, and elastocaloric effects of Ni _50.8 Ti _49.2 shape memory alloy tubes. The isothermal compressive test revealed that the residual strain of thermally-treated Ni-Ti tubes at room temperature approaches zero as aging time is increased. Short-time aging treatment at 400 °C resulted in good superelasticity and elastocaloric cooling performance with a large tunable austenite finish ( A _f ) temperature range of 24.7 °C, as determined from the A _f temperature of the samples that were aged 5–120 min. The main reason of the property change is the formation of a different amount of Ni ₄ Ti ₃ precipitates in the NiTi matrix. Our findings show that it is possible to tailor the A _f temperature range for development of cascade elastocaloric cooling systems by thermally treating a starting singlemore » composition Ni-Ti alloy.« less

Authors:

; Montagnoli, Andre L.; Young, Marcus L.; Takeuchi, Ichiro

Publication Date:: Fri Apr 28 00:00:00 EDT 2023

Sponsoring Org.:: USDOE

OSTI Identifier:: 1971947

Alternate Identifier(s):: OSTI ID: 1970083

Grant/Contract Number:: EE0009159

Resource Type:: Published Article

Journal Name:: JPhys Energy

Additional Journal Information:: Journal Name: JPhys Energy Journal Volume: 5 Journal Issue: 2; Journal ID: ISSN 2515-7655

Publisher:: IOP Publishing

Country of Publication:: United Kingdom

Language:: English

Citation Formats


                    Yamazaki, Takahiro, Montagnoli, Andre L., Young, Marcus L., and Takeuchi, Ichiro. Tuning the temperature range of superelastic Ni-Ti alloys for elastocaloric cooling via thermal processing.  United Kingdom: N. p., 2023. 
Web.  doi:10.1088/2515-7655/accd21.

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                    Yamazaki, Takahiro, Montagnoli, Andre L., Young, Marcus L., & Takeuchi, Ichiro. Tuning the temperature range of superelastic Ni-Ti alloys for elastocaloric cooling via thermal processing.  United Kingdom.  https://doi.org/10.1088/2515-7655/accd21

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                    Yamazaki, Takahiro, Montagnoli, Andre L., Young, Marcus L., and Takeuchi, Ichiro. Fri .  
"Tuning the temperature range of superelastic Ni-Ti alloys for elastocaloric cooling via thermal processing".  United Kingdom.  https://doi.org/10.1088/2515-7655/accd21.

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@article{osti_1971947,

  title        = {Tuning the temperature range of superelastic Ni-Ti alloys for elastocaloric cooling via thermal processing},

  author       = {Yamazaki, Takahiro and Montagnoli, Andre L. and Young, Marcus L. and Takeuchi, Ichiro},

  abstractNote = {Abstract Caloric cooling enlisting solid-state refrigerants is potentially a promising eco-friendly alternative to conventional cooling based on vapor compression. The most common refrigerant materials for elastocaloric cooling to date are Ni-Ti based superelastic shape memory alloys. Here, we have explored tuning the operation temperature range of Ni 50.8 Ti 49.2 for elastocaloric cooling. In particular, we have studied the effect of thermal treatments (a.k.a. aging) on the transformation temperature, superelasticity, and elastocaloric effects of Ni 50.8 Ti 49.2 shape memory alloy tubes. The isothermal compressive test revealed that the residual strain of thermally-treated Ni-Ti tubes at room temperature approaches zero as aging time is increased. Short-time aging treatment at 400 °C resulted in good superelasticity and elastocaloric cooling performance with a large tunable austenite finish ( A f ) temperature range of 24.7 °C, as determined from the A f temperature of the samples that were aged 5–120 min. The main reason of the property change is the formation of a different amount of Ni 4 Ti 3 precipitates in the NiTi matrix. Our findings show that it is possible to tailor the A f temperature range for development of cascade elastocaloric cooling systems by thermally treating a starting single composition Ni-Ti alloy.},

  doi          = {10.1088/2515-7655/accd21},

  journal      = {JPhys Energy},

  number       = 2,

  volume       = 5,

  place        = {United Kingdom},

  year         = {Fri Apr 28 00:00:00 EDT 2023},

  month        = {Fri Apr 28 00:00:00 EDT 2023}

}

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Title: Tuning the temperature range of superelastic Ni-Ti alloys for elastocaloric cooling via thermal processing

Abstract

Citation Formats

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On the effect of alloy composition on martensite start temperatures and latent heats in Ni–Ti-based shape memory alloys journal, May 2015

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