The influence of heat treatment on the magnetic and phase transformation properties of quaternary Heusler alloy NiMnFeGa ribbons

Liu, Z.H.; Chen, J.L.; Hu, Hanjun; Zhang, M.; Dai, Xianying; Zhu, Zhenbo; Liu, G.D.; Wu, Guangheng; Meng, Fanbin; Li, Y.X.

doi:10.1016/j.scriptamat.2004.07.005

Cited by 18 publications

(6 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, the stress formed during rapid solidification has no time to release in a short time, resulting in a very large magnetic hysteresis ΔM hys of 185.5 J.kg −1 . As the increase of annealing time, the stress can gradually release and at the same time, the grain growth can also reduce frictions 25 26 , which will further lead to a lower hysteresis. Therefore, magnetic hysteresis for 60 min sample reduces to 168.6 J.Kg −1 and further reduces to 123.3 J.Kg −1 for 180 min annealed sample with the prolonging of annealing time.…”

Section: Resultsmentioning

confidence: 99%

Enhanced magnetic refrigeration properties in Mn-rich Ni-Mn-Sn ribbons by optimal annealing

Zhang

Zheng

et al. 2015

Sci Rep

View full text Add to dashboard Cite

The influence of annealing time on temperature range of martensitic phase transition (ΔTA-M), thermal hysteresis (ΔThys), magnetic hysteresis loss (ΔMhys), magnetic entropy change (ΔSM) and relative refrigeration capacity (RC) of the Mn-rich Ni43Mn46Sn11 melt spun ribbons have been systematically studied. By optimal annealing, an extremely large ΔSM of 43.2 J.kg−1K−1 and a maximum RC of 221.0 J.kg−1 could be obtained respectively in a field change of 5 T. Both ΔTA-M and ΔThys decreases after annealing, while ΔMhys and ΔSM first dramatically increase to a maximum then degenerates as increase of annealing time. A large effective cooling capacity (RCeff) of 115.4 J.kg−1 was achieved in 60 min annealed ribbons, which increased 75% compared with that unannealed ribbons. The evolution of magnetic properties and magnetocaloric effect has been discussed and proved by atomic ordering degree, microstructure and composition analysis.

show abstract

Section: Resultsmentioning

confidence: 99%

Enhanced magnetic refrigeration properties in Mn-rich Ni-Mn-Sn ribbons by optimal annealing

Zhang

Zheng

et al. 2015

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Internal stresses may originate from the thermal stress and structure stresses caused by the phase transformation. Internal stress anisotropy induces magnetocrystalline anisotropy [21]. Decreasing temperature after the Curie transition increases magnetocrystalline anisotropy due to the reduction in atomic thermal vibration, and an increase of magnetocrystalline anisotropy lowers magnetic susceptibility.…”

Section: Resultsmentioning

confidence: 99%

Effect of ball milling and post-annealing on magnetic properties of Ni49.8Mn28.5Ga21.7 alloy powders

et al. 2008

View full text Add to dashboard Cite

“…This method can avoid long time post heat treatment to achieve the composition homogeneity. Moreover, melt-spun ribbons usually tend to form a highly textured microstructure [51]. In this section, Ni 53 Mn 22 Ga 25 and Ni 51 Mn 27 Ga 22 ribbons with austenite and 7M martensite at room temperature respectively, were prepared by melt-spinning.…”

Section: Resultsmentioning

confidence: 99%

Crystallographic Characterization on Polycrystalline Ni-Mn-Ga Alloys with Strong Preferred Orientation

Yang

Zou

et al. 2017

Materials

View full text Add to dashboard Cite

Heusler type Ni-Mn-Ga ferromagnetic shape memory alloys can demonstrate excellent magnetic shape memory effect in single crystals. However, such effect in polycrystalline alloys is greatly weakened due to the random distribution of crystallographic orientation. Microstructure optimization and texture control are of great significance and challenge to improve the functional behaviors of polycrystalline alloys. In this paper, we summarize our recent progress on the microstructure control in polycrystalline Ni-Mn-Ga alloys in the form of bulk alloys, melt-spun ribbons and thin films, based on the detailed crystallographic characterizations through neutron diffraction, X-ray diffraction and electron backscatter diffraction. The presented results are expected to offer some guidelines for the microstructure modification and functional performance control of ferromagnetic shape memory alloys.

show abstract

The influence of heat treatment on the magnetic and phase transformation properties of quaternary Heusler alloy NiMnFeGa ribbons

Cited by 18 publications

References 11 publications

Enhanced magnetic refrigeration properties in Mn-rich Ni-Mn-Sn ribbons by optimal annealing

Enhanced magnetic refrigeration properties in Mn-rich Ni-Mn-Sn ribbons by optimal annealing

Effect of ball milling and post-annealing on magnetic properties of Ni49.8Mn28.5Ga21.7 alloy powders

Crystallographic Characterization on Polycrystalline Ni-Mn-Ga Alloys with Strong Preferred Orientation

Contact Info

Product

Resources

About