Kinetic arrest behavior in Ni-Co-Mn-Sn alloys within the phase boundary between martensite and strain glass

Hao, Chunxi; Wang, Yu; Wang, Jiaotong; Liang, Chuntao; Duan, Deli; Wang, Dong; Yang, Sen; Song, Xiaoping

doi:10.1016/j.scriptamat.2020.113671

Cited by 14 publications

(2 citation statements)

References 26 publications

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“…Besides, the M-T curve at 5 T exhibits a smaller ∆M and larger hysteresis compared to those at 1 T and 2 T. It can be attributed to the presence of point defects, precipitates and local nonhomogeneous stress, which contribute to hindering the nucleation and/or propagation of martensite and reducing the mobility of the habit plane between the austenite and martensite [41]. Thus, a portion of FM austenite is persisted at low temperatures by the large magnetic field, which is known as the 'transformation arrest' phenomenon [1,42].…”

Section: Resultsmentioning

confidence: 99%

Two magnetic entropy peaks during one-step martensitic transformation in a Ni₄₂Co₈Mn_37.5In_12.5 alloy

Cheng

Wang

et al. 2023

J. Phys. D: Appl. Phys.

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Magnetic shape memory alloys with multiple entropy change (ΔSM) peaks are promising to extend the working temperature window (ΔTeff) in active magnetic refrigeration. They usually have multi-step martensitic transformations, since the multiple variations of structure and magnetic states lead to the one-to-one corresponding ΔSM peaks. In this work, we report an interesting Ni42Co8Mn37.5In12.5 magnetocaloric alloy, which exhibits only one-step martensitic transformation but generates two considerable ΔSM peaks with the value of 7.2 J·K-1·kg-1 and 9.9 J·K-1·kg-1 under 6 T respectively. This phenomenon is attributed to the restriction internal stresses stemming from the lattice mismatch between martensite and austenite, the random local stresses produced by defects, the interfacial hindrances of wide phase boundaries, and the inhibition of dispersed precipitates, which divide the one-step transformation into two discrete stages. Such multiple ΔSM peaks are beneficial for expanding the working temperature window of magnetocaloric refrigerators.

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Section: Resultsmentioning

confidence: 99%

Two magnetic entropy peaks during one-step martensitic transformation in a Ni₄₂Co₈Mn_37.5In_12.5 alloy

Cheng

Wang

et al. 2023

J. Phys. D: Appl. Phys.

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“…9,10 Among these materials, Heusler alloys have received more attention and research studies due to the rich ferromagnetic (FM)/antiferromagnetic (AFM) martensitic transformations. [11][12][13] Long et al prepared common Ni 55. 5 Mn 20 Ga 24.5 and Ni 54.9 Mn 20.5 Ga 24.6 polycrystalline alloys with ΔS of 15.1 and 13.1 J kg −1 K −1 , but their magnetocaloric effects are not ideal.…”

Section: Introductionmentioning

confidence: 99%

Large magnetic entropy change in Ni–Mn–In–Sb alloys via directional solidification and calculated by first-principles calculations

Tian,

Cao,

Chen

et al. 2024

Journal of Applied Physics

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In this work, the magnetocaloric effect in Ni50Mn36In5Sb9 alloy was increased by more than 50% through directional solidification, and the magnetic entropy change increased to 36.2 J kg−1 K−1 under the field of 5 T. The calculated results of differential scanning calorimetry curves confirmed the enhanced entropy change, which also increased from 29.7 to 40.7 J kg−1 K−1. Moreover, first-principles calculations show that the surface formation energy along the L21 (220) plane is the lowest at room temperature, and it is easy to form and undergo martensitic transformation from the (220) crystal plane. Directional solidification causes the alloy to grow basically toward the (220) crystal plane, improve atomic ordering, reduce grain boundaries, and increase grain size. Thereby, the magnetic entropy change is enhanced.

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High performance magnetostriction of Fe-Cu-Pd ferromagnetic strain glass:Local chemical ordering induced martensitic nanodomains morphology with low modulus

et al. 2023

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Kinetic arrest behavior in Ni-Co-Mn-Sn alloys within the phase boundary between martensite and strain glass

Cited by 14 publications

References 26 publications

Two magnetic entropy peaks during one-step martensitic transformation in a Ni₄₂Co₈Mn_37.5In_12.5 alloy

Two magnetic entropy peaks during one-step martensitic transformation in a Ni₄₂Co₈Mn_37.5In_12.5 alloy

Large magnetic entropy change in Ni–Mn–In–Sb alloys via directional solidification and calculated by first-principles calculations

High performance magnetostriction of Fe-Cu-Pd ferromagnetic strain glass:Local chemical ordering induced martensitic nanodomains morphology with low modulus

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Kinetic arrest behavior in Ni-Co-Mn-Sn alloys within the phase boundary between martensite and strain glass

Cited by 14 publications

References 26 publications

Two magnetic entropy peaks during one-step martensitic transformation in a Ni42Co8Mn37.5In12.5 alloy

Two magnetic entropy peaks during one-step martensitic transformation in a Ni42Co8Mn37.5In12.5 alloy

Large magnetic entropy change in Ni–Mn–In–Sb alloys via directional solidification and calculated by first-principles calculations

High performance magnetostriction of Fe-Cu-Pd ferromagnetic strain glass:Local chemical ordering induced martensitic nanodomains morphology with low modulus

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Product

Resources

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Two magnetic entropy peaks during one-step martensitic transformation in a Ni₄₂Co₈Mn_37.5In_12.5 alloy

Two magnetic entropy peaks during one-step martensitic transformation in a Ni₄₂Co₈Mn_37.5In_12.5 alloy