Microstructure and Magnetic Property Variation with Addition of Rare Earth Element Dy in Co-Ni-Al Ferromagnetic Shape Memory Alloy

Ju, Jia; Xue, Feng; Li, Hong

doi:10.1016/s1006-706x(15)30081-9

Cited by 10 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In previous studies, the martensite transformation process in Ti [18][19][20] and Fe [21] alloys had been clear, but in Co-Ni-Al FSMAs, a low martensite transformation temperature has still restricted its industrial applications. For another, doping magnetic rare elements in FSMAs, i.e., Dy [16,22], Tb [23], Nd [24], or Gd [25,26], can significantly affect the microstructure variation and phase transition temperature. Among those doping elements, the 3d electrons in rare earth Gd are delocalized and exterior, escorting to promote the valence electron concentration (R e/a ) and the magnetic valence number (Z m ) of alloys [25].…”

Section: Introductionmentioning

confidence: 99%

Martensite Transformation and Mechanical Properties of Polycrystalline Co-Ni-Al Alloys with Gd Doping

Liu

Shuai

et al. 2018

Metals

Self Cite

View full text Add to dashboard Cite

In order to improve the mechanical properties and phase transition temperature, the influence of Gd doping on the microstructure, phase transition temperature and mechanical properties of Co35Ni32Al33 alloy was investigated. The results show that the γ+β phase was observed in the microstructure of the sample with less Gd doping and the γ phase+martensite was found with more Gd content. The phase transition temperature apparently increases with Gd doping and the phase transition temperature goes over room temperature when the Gd is 3 at.% or more. With increasing Gd doping, more γ phase appears in the sample which results in decrease in hardness. The compressive strength decreases from 2274 to 1630 MPa and the ductility increase from 4.2 to 12.9% with increasing Gd content.

show abstract

Section: Introductionmentioning

confidence: 99%

Martensite Transformation and Mechanical Properties of Polycrystalline Co-Ni-Al Alloys with Gd Doping

Liu

Shuai

et al. 2018

Metals

Self Cite

View full text Add to dashboard Cite

show abstract

“…Additionally, recent studies [10,14,15] on Co-Ni-Al series alloys, revealed that a large output MFIS could be affected by two main parameters, including a suitable martensite structure and a large deformation drive force. As it concerns the first factor, the MFIS can be obtained due to the martensite twin boundaries rearrangement under EMF.…”

Section: Introductionmentioning

confidence: 99%

Structure and Martensitic Transformation in Rapidly Solidified CoNiAlFe Alloy

Chen

Shuai

et al. 2017

Metals

Self Cite

View full text Add to dashboard Cite

Abstract:Housler based magnetic controlled shape memory alloys are characterized by a large magnetic field induced strain. The strain was dependent on the twin martensite structure rearrangement, and the rapid solidification technology had a significant influence on the microstructure, physical, and chemical properties of the alloy. Thus, the structure and the martensitic transformation changes of Co 33 Ni 31 Al 27 Fe 9 during the rapidly solidified process were studied. The microstructure of Co 33 Ni 31 Al 27 Fe 9 with furnace cooled and rapid solidification (RS) constitutes a dual-phase structure, β phase and γ phase in a low cooling rate and martensite and γ phase in a high cooling rate. The γ phase at the grain boundaries reduced and became more fragile by raising the R C value. The one-step austenite-martensite phase transformation occurred during the process of heating and cooling. The phase transition temperature presents an increasing trend by rising the cooling rate, even to over the room temperature. Moreover, the martensite structure in Co 33 Ni 31 Al 27 Fe 9 constitutes a typical L1 0 -type twinning structure.

show abstract

Weak Magnetic Stress Internal Detection Technology of Long Gas and Oil Pipelines

Liu

et al. 2019

The Proceedings of the International Conference on Sensing and Imaging, 2018

View full text Add to dashboard Cite

Microstructure and Magnetic Property Variation with Addition of Rare Earth Element Dy in Co-Ni-Al Ferromagnetic Shape Memory Alloy

Cited by 10 publications

References 20 publications

Martensite Transformation and Mechanical Properties of Polycrystalline Co-Ni-Al Alloys with Gd Doping

Martensite Transformation and Mechanical Properties of Polycrystalline Co-Ni-Al Alloys with Gd Doping

Structure and Martensitic Transformation in Rapidly Solidified CoNiAlFe Alloy

Weak Magnetic Stress Internal Detection Technology of Long Gas and Oil Pipelines

Contact Info

Product

Resources

About