Elastocaloric effect with a broad temperature window and low energy loss in a nanograin Ti-44Ni-5Cu-1Al (at%) shape memory alloy

Superelastic Ti-Ni-based shape memory alloys are promising elastocaloric materials for solid-state refrigeration. In this paper, we studied the mechanical properties and elastocaloric effect of a severely cold rolled Ti-44Ni-5Cu-1Al (at.%) alloy composed of nanograins (∼5-16 nm). The alloy exhibits...

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Authors: Chen, Hong, Xiao, Fei, Zhun, Li, Jin, Xuejun, Mañosa, Lluís, Planes Vila, Antoni
Format: article
Status:Published version
Publication Date:2021
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/173715
Online Access:https://hdl.handle.net/2445/173715
Access Level:Open access
Keyword:Aliatges
Anàlisi tèrmica
Materials
Alloys
Thermal analysis
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spelling Elastocaloric effect with a broad temperature window and low energy loss in a nanograin Ti-44Ni-5Cu-1Al (at%) shape memory alloyChen, HongXiao, FeiZhun, LiJin, XuejunMañosa, LluísPlanes Vila, AntoniAliatgesAnàlisi tèrmicaMaterialsAlloysThermal analysisMaterialsSuperelastic Ti-Ni-based shape memory alloys are promising elastocaloric materials for solid-state refrigeration. In this paper, we studied the mechanical properties and elastocaloric effect of a severely cold rolled Ti-44Ni-5Cu-1Al (at.%) alloy composed of nanograins (∼5-16 nm). The alloy exhibits partial stress-induced martensitic transformation with a large quasilinear reversible strain of ∼3.4 % and a small energy dissipation of ∼1.6 MJ/m3 when a maximum stress of 1 GPa is applied. The temperature decrease induced by adiabatic removal of a stress of 1 GPa is of about −5 K, which is mainly due to the reverse transition occurring during unloading. The effective working temperature window of elastocaloric effect larger than 200 K. The coefficient of performance of this alloy reaches ∼13, which is higher than values reported so far for Ti-Ni alloys.American Physical Society2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/173715Articles publicats en revistes (Física de la Matèria Condensada)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1103/PhysRevMaterials.5.015201Physical Review Materials, 2021, vol. 5, p. 015201https://doi.org/10.1103/PhysRevMaterials.5.015201(c) American Physical Society, 2021info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1737152026-05-27T06:46:51Z
dc.title.none.fl_str_mv Elastocaloric effect with a broad temperature window and low energy loss in a nanograin Ti-44Ni-5Cu-1Al (at%) shape memory alloy
title Elastocaloric effect with a broad temperature window and low energy loss in a nanograin Ti-44Ni-5Cu-1Al (at%) shape memory alloy
spellingShingle Elastocaloric effect with a broad temperature window and low energy loss in a nanograin Ti-44Ni-5Cu-1Al (at%) shape memory alloy
Chen, Hong
Aliatges
Anàlisi tèrmica
Materials
Alloys
Thermal analysis
Materials
title_short Elastocaloric effect with a broad temperature window and low energy loss in a nanograin Ti-44Ni-5Cu-1Al (at%) shape memory alloy
title_full Elastocaloric effect with a broad temperature window and low energy loss in a nanograin Ti-44Ni-5Cu-1Al (at%) shape memory alloy
title_fullStr Elastocaloric effect with a broad temperature window and low energy loss in a nanograin Ti-44Ni-5Cu-1Al (at%) shape memory alloy
title_full_unstemmed Elastocaloric effect with a broad temperature window and low energy loss in a nanograin Ti-44Ni-5Cu-1Al (at%) shape memory alloy
title_sort Elastocaloric effect with a broad temperature window and low energy loss in a nanograin Ti-44Ni-5Cu-1Al (at%) shape memory alloy
dc.creator.none.fl_str_mv Chen, Hong
Xiao, Fei
Zhun, Li
Jin, Xuejun
Mañosa, Lluís
Planes Vila, Antoni
author Chen, Hong
author_facet Chen, Hong
Xiao, Fei
Zhun, Li
Jin, Xuejun
Mañosa, Lluís
Planes Vila, Antoni
author_role author
author2 Xiao, Fei
Zhun, Li
Jin, Xuejun
Mañosa, Lluís
Planes Vila, Antoni
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Aliatges
Anàlisi tèrmica
Materials
Alloys
Thermal analysis
Materials
topic Aliatges
Anàlisi tèrmica
Materials
Alloys
Thermal analysis
Materials
description Superelastic Ti-Ni-based shape memory alloys are promising elastocaloric materials for solid-state refrigeration. In this paper, we studied the mechanical properties and elastocaloric effect of a severely cold rolled Ti-44Ni-5Cu-1Al (at.%) alloy composed of nanograins (∼5-16 nm). The alloy exhibits partial stress-induced martensitic transformation with a large quasilinear reversible strain of ∼3.4 % and a small energy dissipation of ∼1.6 MJ/m3 when a maximum stress of 1 GPa is applied. The temperature decrease induced by adiabatic removal of a stress of 1 GPa is of about −5 K, which is mainly due to the reverse transition occurring during unloading. The effective working temperature window of elastocaloric effect larger than 200 K. The coefficient of performance of this alloy reaches ∼13, which is higher than values reported so far for Ti-Ni alloys.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/173715
url https://hdl.handle.net/2445/173715
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1103/PhysRevMaterials.5.015201
Physical Review Materials, 2021, vol. 5, p. 015201
https://doi.org/10.1103/PhysRevMaterials.5.015201
dc.rights.none.fl_str_mv (c) American Physical Society, 2021
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2021
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física de la Matèria Condensada)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869418465658404864
score 15,301603

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