Elastocaloric effect induced by the strain glass behavior of Ti-18Zr-11Nb-3Sn alloy covering a wide temperature range

Kong, Lingjiao; Wang, Bao; Sun, Sibo; Gao, Zhiyong; Meng, Xianglong

doi:10.1016/j.matlet.2021.131083

Cited by 10 publications

(6 citation statements)

References 5 publications

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“…This result suggests that the structural transition, which is the origin of elastocaloric effect (eCE), cannot be driven by the temperature field in the studied alloys. A similar phenomenon has also been observed in other reported Ti-based elastocaloric refrigerants [33][34][35]. Figure 1c shows the cyclic compressive stress-strain curves of the 1Al, 2Al, and 3Al alloys measured at 295 K. For all samples, a widely employed mechanical training method involving ten loading-unloading cycles is performed before each measurement to achieve stable stress-strain behavior.…”

Section: Composition Designsupporting

confidence: 81%

“…With the rise in testing temperature, σ cr exhibits a linear increasing trend from 61 MPa (255 K) to 303 MPa (395 K). The increase rate of σ cr against temperature, i.e., dσ cr dT , is fitted to be 1.77 MPa K −1 , which is comparable to those of TiZrNbSn (1.83 MPa K −1 ) [33] and TiZrCrSn (1.81 MPa K −1 ) [35]. Similar to σ cr , the value of energy dissipation ∆W also gradually increases with temperature.…”

Section: Temperature Dependencementioning

confidence: 54%

“…At a strain of 3.0%, a large ∆T ad of −6.7 K is detected during the unloading process. This value stands out as one of the most outstanding performances among various Ti-based alloys, such as TiZrNbSn (−5.9 K at 303 K [33]), TiNbZrTa (−4.2 K at 298 K [63]), and TiZrCrSn (−6.5 K at 300 K [35]). Note that with the decrease of applied strain, the magnitude of ∆T ad gradually decreases.…”

Section: Adiabatic Temperature Changementioning

confidence: 99%

“…Recently, the elastocaloric effect (eCE) of β-type Ti-based SMAs has been gaining increasing attention owing to their excellent mechanical properties, narrow stress hysteresis, and broad working temperature range [32][33][34][35]. The eCE of Ti-based SMAs originates from the stress-induced martensitic transformation from body-centered cubic austenite (β phase) to the orthorhombic martensite (α ′′ phase) [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

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Realization of Large Low-Stress Elastocaloric Effect in TiZrNbAl Alloy

Lv,

Xiang,

Gao

et al. 2024

Materials

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Seeking novel high-performance elastocaloric materials with low critical stress plays a crucial role in advancing the development of elastocaloric refrigeration technology. Here, as a first attempt, the elastocaloric effect of TiZrNbAl shape memory alloy at both room temperature and finite temperatures ranging from 245 K to 405 K, is studied systematically. Composition optimization shows that Ti-19Zr-14Nb-1Al (at.%), possessing excellent room-temperature superelasticity with a critical stress of around 100 MPa and a small stress hysteresis of around 70 MPa and outstanding fracture resistance with a compressive strain of 20% and stress of 1.7 GPa, demonstrates a substantial advantage as an elastocaloric refrigerant. At room temperature, a large adiabatic temperature change (ΔTad) of −6.7 K is detected, which is comparable to the highest value reported in the Ti-based alloys. A high elastocaloric cyclic stability, with almost no degradation of ΔTad after 4000 cycles, is observed. Furthermore, the sizeable elastocaloric effect can be steadily expanded from 255 K to 395 K with a temperature window of as large as 140 K. A maximum ΔTad of −7.9 K appears at 355 K. The present work demonstrates a promising potential of TiZrNbAl as a low critical stress and low hysteresis elastocaloric refrigerant.

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Section: Composition Designsupporting

confidence: 81%

Section: Temperature Dependencementioning

confidence: 54%

Section: Adiabatic Temperature Changementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Realization of Large Low-Stress Elastocaloric Effect in TiZrNbAl Alloy

Lv,

Xiang,

Gao

et al. 2024

Materials

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“…Such a reversible stress-induced STG to martensite (STG-M) transition [14][15][16] can also generate reversible eCE. More importantly, the STG exhibits a broad temperature range of glass transition and corresponding stress-induced STG-M transition [17][18][19][20][21][22]. Therefore, it can be expected that the eCE of STG can also show a wide ∆T rev .…”

Section: Introductionmentioning

confidence: 99%

Elastocaloric effect with plateau-shape adiabatic temperature change in Ni–Co–Fe–Ga strain glass alloy

Cheng,

Dong,

Wang

et al. 2024

J. Phys. D: Appl. Phys.

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Elastocaloric effect (eCE) is a very promising candidate for using in non-vapor compression refrigeration, which is highly efficient and eco-friendly. However, designing elastocaloric alloys with a wide reversible working temperature window at low stress is still challenging. In this work, the transition behaviors, microstructural evolutions and the eCE of a series of Ni55-xCoxFe19Ga27 alloys were systematically studied. The Ni44Co11Fe19Ga27 strain glass (STG) alloy exhibits a plateau-shape eCE, which show an average temperature change (ΔTAdia) of ~2.3 K covering a wide reversible working temperature range (ΔTrev) from 135 K to 200 K. The unique eCE behavior of STG stems from that the random distribution of local free energy of the martensite coupled with the small transition energy barriers, which leads to a wide transition-temperature range and decreased hysteresis. The Ni44Co11Fe19Ga27 strain glass alloy achieves a balance between the considerable ΔTAdia and wide ΔTrev, resulting in an optimal comprehensive elastocaloric performance and contributing to improving the efficiency of elastocaloric refrigeration.

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Ferroic glasses

Wang

Yang

et al. 2024

Encyclopedia of Condensed Matter Physics

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Elastocaloric effect induced by the strain glass behavior of Ti-18Zr-11Nb-3Sn alloy covering a wide temperature range

Cited by 10 publications

References 5 publications

Realization of Large Low-Stress Elastocaloric Effect in TiZrNbAl Alloy

Realization of Large Low-Stress Elastocaloric Effect in TiZrNbAl Alloy

Elastocaloric effect with plateau-shape adiabatic temperature change in Ni–Co–Fe–Ga strain glass alloy

Ferroic glasses

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