Formation and structure of Cu–Zr–Al ternary metallic glasses investigated by ion beam mixing and calculation

Bai, Xue; Li, J.H.; Cui, Yuanyuan; Dai, Yuyu; Ding, Ning; Liu, B.X.

doi:10.1016/j.jallcom.2012.01.060

Cited by 8 publications

(3 citation statements)

References 22 publications

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“…The pair-correlation function is therefore commonly recognized as a vital feature to identify the amorphous or crystalline structure of the alloys. Besides pair-correlation functions g(r), structure factor S(q) was utilized to characterize the atomic configurations of the alloys as well [47]. Structure factor S(q) can be calculated as follows:…”

Section: Simulation Models and Characterization Methodsmentioning

confidence: 99%

Interatomic potential to predict the glass-forming ability of Ni–Nb–Mo ternary alloys

Luo

et al. 2014

J Mater Sci

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With the recently proposed formulation, an interatomic n-body potential was first constructed for the Ni-Nb-Mo metal system, and then applied to atomistic simulations to investigate the glass formation of the NiNb-Mo ternary alloys. The simulations not only clarify the atomistic process of the metallic glass formation but also predict for the ternary system of a quantitative composition region within which metallic glass formation is energetically favored. In addition, the energy difference between crystalline solid solution and disordered phase i.e., the driving force for a supersaturated solid solution to amorphize could be considered as an indicator of the glassforming ability (GFA) for a specific alloy. The GFAs of a series of Ni-Nb-Mo alloys were derived from the simulations, leading to pinpoint the Ni 55 Nb 30 Mo 15 alloy with superior GFA in this ternary metal system. The Ni 55 Nb 30 Mo 15 alloy can be considered as the optimized ternary metallic glass for thermal stability and manufacturability.

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Section: Simulation Models and Characterization Methodsmentioning

confidence: 99%

Interatomic potential to predict the glass-forming ability of Ni–Nb–Mo ternary alloys

Luo

et al. 2014

J Mater Sci

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“…%)) has been explored since for low Cu contents a minimum antimicrobial behaviour is expected and therefore this would correspond to the lower bound. The performance of the BMG composite will be compared with that of a material of the same composition but fully crystalline (after annealing at 850 °C for 48 h) [ 26 , 27 , 28 , 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

Tuning the Mechanical and Antimicrobial Performance of a Cu-Based Metallic Glass Composite through Cooling Rate Control and Annealing

et al. 2017

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The influence of cooling rate on the wear and antimicrobial performance of a Cu52Z41Al7 (at. %) bulk metallic glass (BMG) composite was studied and the results compared to those of the annealed sample (850 °C for 48 h) and to pure copper. The aim of this basic research is to explore the potential use of the material in preventing the spread of infections. The cooling rate is controlled by changing the mould diameter (2 mm and 3 mm) upon suction casting and controlling the mould temperature (chiller on and off). For the highest cooling rate conditions CuZr is formed but CuZr2 starts to crystallise as the cooling rate decreases, resulting in an increase in the wear resistance and brittleness, as measured by scratch tests. A decrease in the cooling rate also increases the antimicrobial performance, as shown by different methodologies (European, American and Japanese standards). Annealing leads to the formation of new intermetallic phases (Cu10Zr7 and Cu2ZrAl) resulting in maximum scratch hardness and antimicrobial performance. However, the annealed sample corrodes during the antimicrobial tests (within 1 h of contact with broth). The antibacterial activity of copper was proved to be higher than that of any of the other materials tested but it exhibits very poor wear properties. Cu-rich BMG composites with optimised microstructure would be preferable for some applications where the durability requirements are higher than the antimicrobial needs.

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“…Theoretically, based on a constructed TB-SMA potential, MD simulations were carried out by Cui et al [4,5] using the solid solution model to compare the relative stability of the crystalline solid solution versus its disordered counterpart as a function of solute concentration, predicting a considerably broad region favored for metallic glass formation. For comparison, the authors also present a glass-favored hexagon region calculated by Miedema's model.…”

Section: Introductionmentioning

confidence: 99%

Composition reign favored for the formation of CuZrAl amorphous phases investigated by ion beam mixing

Bai

Cui

et al. 2013

Materials Letters

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Formation and structure of Cu–Zr–Al ternary metallic glasses investigated by ion beam mixing and calculation

Cited by 8 publications

References 22 publications

Interatomic potential to predict the glass-forming ability of Ni–Nb–Mo ternary alloys

Interatomic potential to predict the glass-forming ability of Ni–Nb–Mo ternary alloys

Tuning the Mechanical and Antimicrobial Performance of a Cu-Based Metallic Glass Composite through Cooling Rate Control and Annealing

Composition reign favored for the formation of CuZrAl amorphous phases investigated by ion beam mixing

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