Effect of yttrium on the mechanical and magnetostrictive properties of Fe83Ga17 alloy

Li, Jiheng; Xiao, Xi-Ming; Yuan, Chao; Gao, Xuexu; Bao, Xiaoqian

doi:10.1016/s1002-0721(14)60530-5

Cited by 21 publications

(10 citation statements)

References 21 publications

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“…Therefore, element Dy mainly exists in the precipitates. Some previous studies have observed this characteristic dualphase structure in other rare-earth-doped Fe-Ga alloys (such as Tb, Sm, Y, Ce, Er) [25,27,28,31,38,40] , and it is believed to be beneficial for improving the magnetostrictive properties of this material system. Figure 3 shows the SEM morphology of the Fe 83 Ga 17 Dy 0.4 alloy and corresponding EDS for grain boundary (Fig.…”

Section: Experimental Materials and Methodsmentioning

confidence: 82%

“…This method is effective to enhance the mechanical properties, but it cannot significantly improve the magnetostrictive performance. Recent studies have found that the small addition of rare-earth elements Y and Tb could significantly enhance the magnetostrictive and mechanical properties of the as-cast Fe-Ga polycrystalline alloys simultaneously [38,39] . A small amount of Y (0.16at.%) increased the tensile strength of as-cast Fe 83 Ga 17 alloys to 674 MPa and improved the ductility with elongation of 4.2% at room temperature [38] .…”

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confidence: 99%

“…Recent studies have found that the small addition of rare-earth elements Y and Tb could significantly enhance the magnetostrictive and mechanical properties of the as-cast Fe-Ga polycrystalline alloys simultaneously [38,39] . A small amount of Y (0.16at.%) increased the tensile strength of as-cast Fe 83 Ga 17 alloys to 674 MPa and improved the ductility with elongation of 4.2% at room temperature [38] . The improved ultimate tensile strength (595 ± 10 MPa) and fracture strain (3.5 ± 0.1%) were obtained with the increased magnetostriction of 105 ± 9 ppm in the Tb-doped Fe-Ga alloys [39] .…”

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confidence: 99%

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Effect of Dy doping on magnetostrictive and mechanical properties of Fe83Ga17 alloy

et al. 2020

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M agnetostriction is generally considered as the change in dimension of materials under an applied external magnetic field. Magnetostrictive materials have attracted widespread attention due to their utilization in actuators, sensors, transducers, microelectromechanical systems and energy harvesting [1,2] . Among various magnetostrictive materials, the Tb-Dy-Fe alloys (known as Terfenol-D) and Fe-Ga alloys (known as Galfenol) are the two most promising materials. Compared to Terfenol-D, Fe-Ga alloys exhibit good combination advantages: (i) low saturation magnetic field (~100 Oe); (ii) moderate magnetostriction (~400 ppm); (iii) good mechanical properties; (iv) low cost; (v) high Curie temperature (T c >650 °C ) [3][4][5][6][7] . Therefore, since 2000, many studies on microstructure, magnetostrictive and mechanical properties of Fe-Ga alloys have been carried out.Fe-Ga single crystal alloys exhibit good robustness,

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Section: Experimental Materials and Methodsmentioning

confidence: 82%

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confidence: 99%

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confidence: 99%

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Effect of Dy doping on magnetostrictive and mechanical properties of Fe83Ga17 alloy

et al. 2020

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“…Recently, the rare-earth-doped Fe-Ga alloys have received more attention, due to the rare-earth doping can efficiently improve the magnetostrictive properties of binary Fe-Ga alloys. [7][8][9][10][11][12][13][14][15][16][17][18][19][20] Furthermore, the magnetostrictive properties of composite materials are closely related to the inherent magnetostriction of magnetostrictive alloy powders constituting composite materials. If we use rare-earth-doped Fe-Ga alloys instead of the binary Fe-Ga alloys, it may obtain novel composite materials with better magnetostrictive properties than that of binary Fe-Ga composite materials.…”

Section: Introductionmentioning

confidence: 99%

Flexible Pr‐Doped Fe–Ga Composite Materials: Preparation, Microstructure, and Magnetostrictive Properties

et al. 2020

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Herein, the manufacture process and the results of investigations into the microstructure and magnetic properties of flexible Fe83Ga17Prx (x = 0, 0.2, 1.0) composite materials are presented. The Fe83Ga17Prx (x = 0, 0.2, 1.0) alloy powders with particle size of 75 μm and epoxy binder are bonded at a weight ratio of 2:1, and then orient under a constant applied magnetic field of 10 kOe and airdry 12 h, finally processed into composite material. The microstructure and magnetic properties of as‐cast alloy, unoriented (UN), and oriented (OR) composite materials are examined by X‐ray diffractometer (XRD), scanning electron microscopy and energy dispersive spectrometry (SEM/EDS), vibrating sample magnetometer (VSM), and strain gauge method. The results show that the Pr‐doped Fe–Ga as‐cast samples consist of A2 matrix phase and rare‐earth‐rich phase. As the Pr content increases, the grain sizes of A2 matrix phase decrease. The OR composite materials show significant magnetic anisotropy. Compared with as‐cast and UN composite materials, the magnetostriction of OR composite materials increase. The highest value of magnetostriction (310 ppm) is obtained in the flexible Fe83Ga17Pr1.0 composite material.

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“…Expansion of the tetragonal distortion is the major route to improve the magnetostriction of these materials. Great efforts have been made following this idea by adding 3 d and 4 d transition elements such as V, Cr, Mn, Co, Ni, Cu, Zn, Nb, Mo and Rh1213141516; main group elements such as Be, C, B, N, Si, Al, Ge, Sn171819202122; and rare earth elements such as Y, La, Ce, Tb, Dy…1123242526272829. Trace doping with rare earth elements has been confirmed to be the most effective way to influence the induced tetragonality of the matrix and it greatly enhances the magnetostriction of the Fe-Ga alloys11.…”

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confidence: 99%

Investigating enhanced mechanical properties in dual-phase Fe-Ga-Tb alloys

Meng

Wang

et al. 2016

Sci Rep

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Dual-phase (Fe83Ga17)100−xTbx alloys with 0 ≤ x ≤ 1 were synthesized by arc melting and homogenization treatment. The microstructures and the corresponding mechanical properties were systematically investigated. The chemical composition of the body centered cubic matrix is Fe83Ga17. The monoclinic second phase was composed of meltable precipitates with approximate composition Fe57Ga33Tb10. The nano-hardness of matrix and precipitates were 2.55 ± 0.17 GPa and 6.81 ± 1.03 GPa, respectively. Both the ultimate tensile strength (UTS) and fracture strain (ε) of the alloys were improved by the precipitates for x ≤ 0.2 alloys, but the strain decreases significantly at higher values of x. As potential structural-functional materials, the best mechanical properties obtained were a UTS of 595 ± 10 MPa and an ε of 3.5 ± 0.1%, four-fold and seven-fold improvements compared with the un-doped alloy. The mechanism for these anomalous changes of mechanical properties was attributed to the dispersed precipitates and semi-coherent interfaces, which serve as strong obstacles to dislocation motion and reduce the stress concentration at the grain boundaries. A sizeable improvement of magnetostriction induced by the precipitates in the range 0 ≤ x ≤ 0.2 was discovered and an optimal value of 150 ± 5 ppm is found, over three times higher than that of the un-doped alloy.

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Effect of yttrium on the mechanical and magnetostrictive properties of Fe83Ga17 alloy

Cited by 21 publications

References 21 publications

Effect of Dy doping on magnetostrictive and mechanical properties of Fe83Ga17 alloy

Effect of Dy doping on magnetostrictive and mechanical properties of Fe83Ga17 alloy

Flexible Pr‐Doped Fe–Ga Composite Materials: Preparation, Microstructure, and Magnetostrictive Properties

Investigating enhanced mechanical properties in dual-phase Fe-Ga-Tb alloys

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