Bulk metallic glass-forming region of Cu–Zr binary and Cu–Zr based multicomponent alloy systems

Zhang, Ailong; Chen, Ding; Chen, Zhenhua

doi:10.1016/j.jallcom.2008.10.022

Cited by 20 publications

(10 citation statements)

References 28 publications

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“…For example, they confirmed the existence of Zr-Al and Zr-Cu SRO in bulk metallic glass Zr 55 Cu 35 Al 10 . In the Ca-Mg-Zn alloy system, Ca-Zn atom pairs exist in amorphous alloy due to the large negative mixing enthalpy between them (−22 kJ/mol).…”

Section: Resultsmentioning

confidence: 73%

“…Solute atoms Cu or Ni may occupy ␤ and ␥ sites, or occupy ␤ sites with ␥ sites being vacant, or occupy ␥ sites with ␤ sites being vacant. Therefore, the calculated glass-forming compositions are Zr 60 (CuNi) 30 (AlTi) 10 , Zr 75 (CuNi) 12.5 (AlTi) 12.5 and Zr 67 (CuNi) 22 (AlTi) 11 , respectively. Table 1 lists the calculated glass-forming compositions and eutectic compositions for these four multicomponent alloy systems.…”

Section: Resultsmentioning

confidence: 96%

“…We have predicted bulk metallic glass-forming region of some alloy systems in our previous works [10,11]. However, it is valid only for alloy systems containing no more than three topologically different constituents.…”

Section: Resultsmentioning

confidence: 96%

“…It may be a new and simple way to obtain novel bulk metallic glasses, if we can predict eutectic compositions of multicomponent alloy systems with the ECP model. We have predicted bulk metallic glass-forming region of some alloy systems [10,11]. However, it is valid only for alloy systems containing no more than three topologically different constituents.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Predicting the eutectic compositions of four multicomponent alloy systems by a simple approach

Zhang

Chen

2011

Journal of Alloys and Compounds

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Section: Resultsmentioning

confidence: 73%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Predicting the eutectic compositions of four multicomponent alloy systems by a simple approach

Zhang

Chen

2011

Journal of Alloys and Compounds

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“…The convention chosen here is that the largest solutes are a atoms, and b and g solutes are progressively smaller. In all these RE-based alloy systems, the solvent atoms U and solute atoms a should be RE (La, Ce, Gd, Er, Pr and Ce) and Al, respectively, due to the requirements of efficient packing of constituent atoms and the effect of chemical bonding on BMG formation [27]. Besides the large negative chemical mixing enthalpies between solvent atoms U and solute atoms a, those between other solute atoms are also helpful to stabilize the undercooled melt [28].…”

Section: Resultsmentioning

confidence: 99%

Predicting the thermal stability of RE-based bulk metallic glasses

Zhang

Chen

2010

Intermetallics

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Molecular dynamics simulation of minor Zr addition on short and medium-range orders of Cu-Zr metallic glass

Cao

Sun

2022

J Mol Model

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The compositional dependence of the atomic structure and glass-forming ability (GFA) was systematically studied in a binary alloy series Cu 100-x Zr x (x= 0.5, 1.0, 2.0, 3.0, 5.0, 7.0, 10.0) by molecular dynamics simulations. Several structural analysis techniques are adopted to find a direct relationship between the atomic structures and GFA by minor Zr addition. The simulation results confirm that the difference among the critical cooling rates proves the enhancement of GFA. It is found that the Zr addition can enhance the icosahedra short-range order (SRO). From another side, in terms of MRO, the addition of Zr can enhance interpenetrating icosahedra connection which will give rise to the Bergman-icosahedra medium-range order, resulting in a more stable, more compact, and more complex structures, which is responsible for the enhanced GFA in CuZr alloys. Furthermore, the five-fold symmetry governs the formation of the amorphous state and may behaves as a principal indication of the formation of the glass state during the cooling process. We also found a critical Zr content of 3%, below which the effect of Zr on the structures is not obvious. However, when the Zr content is higher than 3%, the Zr can rapidly change the structures of the liquid and glassy structure. These results are helpful for understanding the GFA of CuZr alloys.Keywords Molecular dynamics simulations ⋅ Short-range order ⋅ Medium-range order ⋅ Minor Zr and strongly increase the icosahedral short-range order in the system.

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Bulk metallic glass-forming region of Cu–Zr binary and Cu–Zr based multicomponent alloy systems

Cited by 20 publications

References 28 publications

Predicting the eutectic compositions of four multicomponent alloy systems by a simple approach

Predicting the eutectic compositions of four multicomponent alloy systems by a simple approach

Predicting the thermal stability of RE-based bulk metallic glasses

Molecular dynamics simulation of minor Zr addition on short and medium-range orders of Cu-Zr metallic glass

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