Ternary bulk metallic glasses formed by minor alloying of Cu8Zr5 icosahedron

Xia, Junhai; Qiang, Jianbing; Wang, Yingmin; Wang, Qing; Chen, Dong

doi:10.1063/1.2183367

Cited by 84 publications

(50 citation statements)

References 15 publications

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“…It is well known that GFAs are related to many empirical guidelines [1,[7][8][9][10]. Among them, the cluster line approach has been proven effective in locating high GFA compositions in a few well-studied systems such as Zr-, Cu-, RE-(RE = Rare Earth) and Fe-based alloys [10][11][12]. In the present work, we attempt to optimize Ni-based Ni-Fe-B-Si-Ta BMG compositions through a combination of the cluster line approach with multi-alloying strategy [9] and substitutions of similar elements [7].…”

Section: Introductionmentioning

confidence: 99%

Ni-based Ni-Fe-B-Si-Ta bulk metallic glasses

Zhu

Wang

Zhao

et al. 2010

Sci. China Phys. Mech. Astron.

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The glass-forming ability and properties of Ni-based Ni-Fe-B-Si-Ta bulk metallic glasses are explored in this work. The alloy compositions are determined by using a combination of the cluster line approach, the multi-alloying strategy and the substitutions of similar elements. Bulk metallic glasses with diameters of 3 mm take shape at compositions formulated under the cluster-plus-glue-atom model [M 9 B]B~[(Ni 1−x Fe x ) 7.71 (Si 0.66 Ta 0.34 ) 1.29 B]B 0.94 =(Ni 1−x Fe x ) 70.5 B 17.7 Si 7.8 Ta 4 , x=0.35-0.45, where the bracketed part is the cluster and the unbracketed part is the glue atoms. These alloys exhibit good magnetic properties. The maximum I s is found in the (Ni 0.55 Fe 0.45 ) 70.5 B 17.7 Si 7.8 Ta 4 alloy which reaches 0.51 T, with its H c as low as 8.5 A/m. Interestingly, these alloys display dual glass transitions at (Ni 0.

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Section: Introductionmentioning

confidence: 99%

Ni-based Ni-Fe-B-Si-Ta bulk metallic glasses

Zhu

Wang

Zhao

et al. 2010

Sci. China Phys. Mech. Astron.

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“…The cluster packing efficiency in the Zr50Cu50 alloy may be not very high because it was suggested that voids could be created due to the incomplete filling in space only by icosahedral-like clusters [52]. However, in the corresponding Al-doped ZrCu amorphous alloy, some of the Al atoms may be regarded as glue atoms [13,53], which may occupy the interstices around Zr-and Cu-centered icosahedral-like clusters to connect and fix them. These Al glue atoms are usually surrounded with fewer neighbors, resulting in smaller Al-centered VCs, such as the deduced <0,2,8,0>, <0,3,6,0>, and <0,3,6,1> with CNs of 9-10.…”

Section: Relationship Between Microstructure and Gfamentioning

confidence: 99%

Detecting Structural Features in Metallic Glass via Synchrotron Radiation Experiments Combined with Simulations

Guo

Luo

et al. 2015

Metals

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Abstract:Revealing the essential structural features of metallic glasses (MGs) will enhance the understanding of glass-forming mechanisms. In this work, a feasible scheme is provided where we performed the state-of-the-art synchrotron-radiation based experiments combined with simulations to investigate the microstructures of ZrCu amorphous compositions. It is revealed that in order to stabilize the amorphous state and optimize the topological and chemical distribution, besides the icosahedral or icosahedral-like clusters, other types of clusters also participate in the formation of the microstructure in MGs. This cluster-level co-existing feature may be popular in this class of glassy materials.

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“…In addition, it is known that minor alloying by elements with atomic sizes different from the main continent elements could dramatically improve GFAs. For example, minor alloying of Cu-Zr BMGs by Nb, Sn or Mo with less than 2 at.% significantly improved their GFAs [15] . In this paper, we will combine the cluster line approach with the minor-alloying principle to design Fe-based BMGs: The Fe-B-Y ternary system is selected as the basic system and the cluster line approach is used to design alloy compositions, then the basic ternary compositions are alloyed by adding minor fourth element Nb.…”

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confidence: 99%

Fe-B-Y-Nb bulk metallic glasses in relation to clusters

Wang

Chen

et al. 2008

Sci. China Ser. G-Phys. Mech. As

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Bulk metallic glass formations in the Fe-B-Y-Nb quaternary alloy system were investigated by using the cluster line rule in combination with the minor alloying principle. The Fe-B-Y ternary system was selected as the basic system and the intersections of cluster lines were taken as the basic ternary compositions. The basic compositions were further alloyed with minor amounts of Nb. After 3-5 at.% Nb was added, the basic composition Fe 68.6 B 25.7 Y 5.7 , which was developed from the most densely packed cluster Fe 8 B 3 , formed 3 mm bulk metallic glasses. These quaternary bulk metallic glasses (Fe 68.6 B 25.7 Y 5.7 ) 100-x Nb x (x = 3-5 at.%) are expressed approximately with a unified simple composition formula: (Fe 8 B 3 ) 1 (Y, Nb) 1 . The (Fe 68.6 B 25.7 Y 5.7 ) 97 Nb 3 bulk metallic glass has the largest glass forming ability with the following characteristic parameters T g = 907 K, T x = 1006 K, T g /T l = 0.644, γ = 0.434, and longness t = 22 mm. The combination of the cluster line rule and the minoralloying principle is a promising new route towards the quantitative composition design of multi-component metallic glasses. bulk metallic glass, Fe-B-Y-Nb alloys, cluster, composition designRecently, two classes of Fe-based bulk metallic glasses (BMGs) have been developed: Nonferromagnetic (such as Fe-Mn-Cr-Mo-C-B, Fe-Cr-(Ln, Y)-Mo-C-B) [1][2][3][4][5] and soft magnetic (such as Fe-(Al, Ga)-P-B-C, Fe-TM (TM = Co, Zr, Nb, Ta, Mo, W)-B) BMGs [6] , which are drawing more attention due to their superior mechanical and magnetic properties. However, compared with Pd-, Zr-and Cu-based BMGs with large glass forming abilities (GFAs), Fe-based BMGs have relatively weak GFAs and are formed only in multi-component systems, generally containing five or more than five constituents [1,7] (except a few ternary systems such as Fe-B-Y which can form BMG rods with a diameter of 2 mm [8] ). Furthermore, Fe-based BMGs are very composition-sensitive and the BMGs-forming range is quite small. Therefore, in order to avoid the blindness in searching for BMGs in complex multi-component systems, the composition design is of great importance for

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Ternary bulk metallic glasses formed by minor alloying of Cu8Zr5 icosahedron

Cited by 84 publications

References 15 publications

Ni-based Ni-Fe-B-Si-Ta bulk metallic glasses

Ni-based Ni-Fe-B-Si-Ta bulk metallic glasses

Detecting Structural Features in Metallic Glass via Synchrotron Radiation Experiments Combined with Simulations

Fe-B-Y-Nb bulk metallic glasses in relation to clusters

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