The Influence of Boron on Microstructural Evolution, Mechanical and Magnetic Behavior of Amorphous Fe91−x(Zr5-Nb4)Bx Melt-Spun Alloys

In this work, we report a systematic study on the microstructure evolution of rapid solidified Fe91−xZr5Nb4Bx alloys (x = 10, 15, 20, 25, 30 at%) under melt-spinning conditions. Mechanical and magnetic properties are also evaluated. X-ray diffraction patterns indicate that the microstructure across the compositional series consists of an amorphous matrix with partial crystallization when boron concentration is increased. These features were identified by transmission electron microscopy (TEM). The radial distribution function (RDF) affords to resolve the nearest-neighbor configuration. The tensile and microhardness properties were measured to correlate the microstructural evolution with boron content. On the other hand, the magnetic properties of these alloy series were determined by vibrating sample magnetometry (VSM); the saturation magnetization and Curie temperature showed an increasing tendency when increasing the boron content, reaching values up to 110 Am2kg−1 and 465 K, respectively. In addition to the aforementioned, the coercive field remained constant. All these magnetic properties were correlated with the microstructure features observed by XRD, RDF and TEM.

[1]  N. Ito,et al.  Recent progress in Fe-based amorphous and nanocrystalline soft magnetic materials , 2020 .

[2]  Haibo Sun,et al.  Glass Forming Ability, Thermal Stability, and Magnetic Properties of FeCoNiBSi Alloys with Different B Contents , 2018 .

[3]  T. Xu,et al.  Synthesis of Fe75Cr5(PBC)20 bulk metallic glasses with a combination of desired merits using industrial ferro-alloys without high-purity materials , 2017 .

[4]  D. Miracle,et al.  A critical review of high entropy alloys and related concepts , 2016 .

[5]  Arnaud Furnemont,et al.  [Co/Ni]-CoFeB hybrid free layer stack materials for high density magnetic random access memory applications , 2016 .

[6]  Y. M. Wang,et al.  Composition formulas of Fe–B binary amorphous alloys , 2016 .

[7]  Sameehan S. Joshi,et al.  Tensile behavior of laser treated Fe-Si-B metallic glass , 2015 .

[8]  Yidong Wu,et al.  Cr-based bulk metallic glasses with ultrahigh hardness , 2015 .

[9]  R. Valenzuela.  Soft Ferromagnetic Amorphous and Nanocrystalline Alloys , 2012 .

[10]  J. Eckert,et al.  Atomic structure and transport properties of Cu50Zr45Al5 metallic liquids and glasses: Molecular dynamics simulations , 2011 .

[11]  H. Ding,et al.  Fe-based glassy alloys with high iron content and high saturation magnetization , 2011 .

[12]  Yuan Wu,et al.  Effects of alloying elements on glass formation, mechanical and soft-magnetic properties of Fe-based metallic glasses , 2011 .

[13]  Y. Shibutani,et al.  Structural disordering of amorphous alloys: A molecular dynamics analysis , 2009 .

[14]  Muratahan Aykol,et al.  Nano-scale phase separation in amorphous Fe-B alloys : Atomic and cluster ordering , 2009 .

[15]  C. Suryanarayana,et al.  Effect of Nb on the glass-forming ability of mechanically alloyed Fe–Ni–Zr–B alloys , 2008 .

[16]  Kenneth F. Kelton,et al.  Structural Aspects of Metallic Glasses , 2007 .

[17]  Akira Takeuchi,et al.  Classification of Bulk Metallic Glasses by Atomic Size Difference, Heat of Mixing and Period of Constituent Elements and Its Application to Characterization of the Main Alloying Element , 2005 .

[18]  D. Miracle.  Efficient Local Packing in Metallic Glasses , 2004 .

[19]  M. Widom,et al.  Cohesive energies of Fe-based glass-forming alloys , 2004, cond-mat/0405298.

[20]  Yat Li,et al.  Boron content dependence of crystallization, glass forming ability and magnetic properties in amorphous Fe-Zr-B-Nb alloys , 2004 .

[21]  Yi Li,et al.  Effects of high boron content on crystallization, forming ability and magnetic properties of amorphous Fe91−xZr5BxNb4 alloy , 2003 .

[22]  A. Inoue,et al.  Formation and Soft Magnetic Properties of Fe-B-Si-Zr Bulk Glassy Alloys with High Saturation Magnetization above 1.5 T , 2002 .

[23]  A. Takeuchi,et al.  Recent Progress in Bulk Glassy Alloys , 2002 .

[24]  Shigeo Sato,et al.  Retraction: Anomalous X-ray Scattering Study of Amorphous Fe 70 M 10 B 20 (M = Zr, Nb, and Cr) Alloys , 2000 .

[25]  A. Slawska-Waniewska,et al.  Mössbauer studies of FeZrB(Cu) amorphous alloys , 1996 .

[26]  Kwang Youn Kim,et al.  Microstructural change upon annealing FeZrB alloys with different boron contents , 1994 .

[27]  Akihiro Makino,et al.  Magnetic properties and microstructure of nanocrystalline bcc Fe-M-B (M=Zr,Hf,Nb) alloys , 1994 .

[28]  Akihiro Makino,et al.  High Saturation Magnetization and Soft Magnetic Properties of bcc Fe–Zr–B and Fe–Zr–B–M (M=Transition Metal) Alloys with Nanoscale Grain Size , 1991 .

[29]  H. Hermann,et al.  Analytic approach to the structure of amorphous iron-boron alloys , 1986 .

[30]  Hung Chen.  REVIEW ARTICLE: Glassy metals , 1980 .

[31]  R. Ray,et al.  Iron‐boron metallic glasses , 1978 .

[32]  J. Finney,et al.  Modelling the structures of amorphous metals and alloys , 1977, Nature.

[33]  H. Chen.  Correlation between the thermal stability and activation energy of crystallization in metallic glasses , 1976 .

[34]  P. Duwez,et al.  Non-crystalline Structure in Solidified Gold–Silicon Alloys , 1960, Nature.

[35]  M. Höhl.  Magnetische Untersuchungen , 1960 .

[36]  B. A. Calhoun,et al.  Ferromagnetic materials , 1955 .