Superelastic behavior and elastocaloric effect in a Ni51.5Fe21.5Ga27.0 ferromagnetic shape memory single crystal under compression

Masdeu, F.; Pons, J.; Torrens‐Serra, J.; Chumlyakov, Yu. I.; Cesari, E.

doi:10.1016/j.msea.2021.142362

Cited by 22 publications

(5 citation statements)

References 61 publications

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“…It is revealed that the dislocations marked with red squares in Figure a have b = ⟨111⟩, which is also the slip direction of body-centered cubic (BCC) system. This type of dislocation has also been observed in Cu–Zn–Al, Cu–Al–Ni, and Ni–Fe–Ga shape memory alloys with L2 1 structure.…”

Section: Resultssupporting

confidence: 61%

Long-Term Stable Elastocaloric Effect in a Heusler-Type Co₅₁V₃₃Ga₁₆ Polycrystalline Alloy

Liu

Wang

et al. 2022

ACS Appl. Energy Mater.

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Cyclic stability is of utmost importance for the long-term work of caloric materials in solid-state refrigeration. Heusler-type shape memory alloys show a large elastocaloric effect under low driving stress, but their intrinsic brittleness always leads to poor cyclic stability. Here, we demonstrate the simultaneously achieved large elastocaloric effect and long-term cyclic stability in a Heusler-type Co 51 V 33 Ga 16 polycrystalline alloy. Over a wide temperature range of 290−340 K, large adiabatic temperature change (ΔT ad ) values of −6.0 to −10.9 K can be obtained upon fast unloading. Moreover, by synthetically considering the influences of deformation parameters on the ΔT ad values, stress hysteresis, energy dissipation, and temporary residual strain to balance cooling capacity and cyclability, large ΔT ad values higher than 6.0 K are maintained for more than 50 000 superelastic cycles performed under the compressive strain of 3.5% and strain rate of 1.1 × 10 −2 s −1 , showing a very low degradation rate of 2 × 10 −5 K per cycle. Such cyclic stability of elastocaloric effect well outperforms those reported in Heusler-type alloys so far.

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Section: Resultssupporting

confidence: 61%

Long-Term Stable Elastocaloric Effect in a Heusler-Type Co₅₁V₃₃Ga₁₆ Polycrystalline Alloy

Liu

Wang

et al. 2022

ACS Appl. Energy Mater.

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“…Thus, the [111] B2 -oriented crystals are characterized by a higher strain hardening coefficient θ at stage II, a wide stress hysteresis ∆σ at the SE in 51.2Ni single crystals, and a small reversible SME/SE strain, in contrast to the [001] B2 -oriented crystals with the detwinning contributions of ε detw →0 (Figures 4 and 5). A wide stress hysteresis ∆σ also observed in ferromagnetic single crystals with B2-L1 0 MT, such as NiFeGa(Co), NiMnGa, and CoNi (Al, Ga) [38][39][40].…”

Section: Cvp Martensite Domain Pairsmentioning

confidence: 92%

Orientation Dependence of B19’-Martensite Reorientation Stress and Yield Stress in TiNi Single Crystals

Panchenko,

Eftifeeva,

Fatkullin

et al. 2023

Metals

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This paper deals with the effect of crystal orientation on the B19’-martensite reorientation stress and yield stress in compression in TiNi single crystals with different Ni contents varying from 50.4 to 51.2 at.%. It was experimentally shown that the martensite yield stress appears to be higher for the [111]B2-oriented single crystals than for the [001]B2-oriented single crystals regardless of Ni content. The difference between martensite yield stress for the two investigated orientations increases with the growth of Ni content. The maximum difference between martensite yield stress σcrM for two investigated orientations is 996 MPa at Ni content of 51.2 at.% (σcrM = 1023 MPa for the [001]B2-orientation and σcrM = 2019 MPa for the [111]B2-orientation). As a result of comparison with the B2-austenite yield stress, it was found that this is not an ordinary case. The [001]B2 orientation is a high-strength in B2-austenite and a low-strength in B19’-martensite. It was experimentally shown that the B19’-martensite reorientation stresses weakly depend on the orientation and chemical composition compared with the martensite yield stress. The reasons for the orientation dependence of the martensite yield stress in compression and the deformation mechanisms of B19’-martensite are discussed.

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“…Generally, the large grain size is advantageous for enhancing the superelasticity and elastocaloric performance of shape memory alloys. In the fabricated sample, no obvious crystallographic preferred orientation (texture) exists, which is common in the arc-melting sample [55,56].…”

Section: Composition Designmentioning

confidence: 99%

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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Superelastic behavior and elastocaloric effect in a Ni51.5Fe21.5Ga27.0 ferromagnetic shape memory single crystal under compression

Cited by 22 publications

References 61 publications

Long-Term Stable Elastocaloric Effect in a Heusler-Type Co₅₁V₃₃Ga₁₆ Polycrystalline Alloy

Long-Term Stable Elastocaloric Effect in a Heusler-Type Co₅₁V₃₃Ga₁₆ Polycrystalline Alloy

Orientation Dependence of B19’-Martensite Reorientation Stress and Yield Stress in TiNi Single Crystals

Realization of Large Low-Stress Elastocaloric Effect in TiZrNbAl Alloy

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Superelastic behavior and elastocaloric effect in a Ni51.5Fe21.5Ga27.0 ferromagnetic shape memory single crystal under compression

Cited by 22 publications

References 61 publications

Long-Term Stable Elastocaloric Effect in a Heusler-Type Co51V33Ga16 Polycrystalline Alloy

Long-Term Stable Elastocaloric Effect in a Heusler-Type Co51V33Ga16 Polycrystalline Alloy

Orientation Dependence of B19’-Martensite Reorientation Stress and Yield Stress in TiNi Single Crystals

Realization of Large Low-Stress Elastocaloric Effect in TiZrNbAl Alloy

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Long-Term Stable Elastocaloric Effect in a Heusler-Type Co₅₁V₃₃Ga₁₆ Polycrystalline Alloy

Long-Term Stable Elastocaloric Effect in a Heusler-Type Co₅₁V₃₃Ga₁₆ Polycrystalline Alloy