Interpenetrating networks in Zr–Cu–Al and Zr–Cu metallic glasses

Wang, Chang Chun; Wong, Chee How

doi:10.1016/j.intermet.2011.10.022

Cited by 28 publications

(14 citation statements)

References 27 publications

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“…The similar pinning effect of Y is also observed in Cu-Zr-Al BMG with 2-at% Y addition [13]. In general, the icosahedra effect is believed to slow down dynamic [11,12,14], but there is still some contrary conclusion [9]. Then which effect of Zr is more important in slowing down still needs to investigate further.…”

Section: Resultsmentioning

confidence: 54%

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Role of Zr in icosahedral forming in Cu–Zr metallic glasses

2015

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Section: Resultsmentioning

confidence: 54%

“…It indicates that the Zr can decrease the dynamics by two effects. The first is by icosahedra effect [11,12], the other effect is by pinning effect. The similar pinning effect of Y is also observed in Cu-Zr-Al BMG with 2-at% Y addition [13].…”

Section: Resultsmentioning

confidence: 99%

Role of Zr in icosahedral forming in Cu–Zr metallic glasses

2015

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“…The complex structure is more stable since the mobility of atoms is restricted, which is favourable to the GFA. [32] …”

Section: Physics and Chemistry Of Liquidsmentioning

confidence: 99%

Relating glass formation to eutectic composition in Cu_100-xZr_xalloy by molecular dynamics simulation

Meng

Wang

et al. 2014

Physics and Chemistry of Liquids

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The relationship between eutectic compositions and glass-forming ability (GFA) in Cu 100-x Zr x (x = 8-83) system is studied by molecular dynamic (MD) simulation based on the embedded atom method (EAM). Local maxima of GFA occur in Cu 56 Zr 44 , Cu 47 Zr 53 and Cu 31 Zr 69 alloys, close to eutectic points in Cu-Zr binary phase diagram. The structural parameters indicate that the heterogeneous Cu-Zr pairs exhibit stronger and more stable interaction than that of homogeneous pairs. The small peak with a negative amplitude ahead of the main peak in S CuZr (Q) also implies the preference of Cu-Zr pairs. The avoidance of Cu-Cu neighbours and Zr-Zr neighbours, which correspond to the prepeak prior to the main peak of S CuCu (Q) and S ZrZr (Q), leads to structural order on intermediate length scales. Perfect and defect icosahedra constitute medium range order (MRO) clusters by sharing atoms, which promotes the glass formation.

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“…Comparing with Zr-Cu binary alloy system, Zr-Cu-Al ternary alloys own better GFA and other mechanical properties due to the addition of Al. Many research works have been conducted on these alloys [16][17][18][19][20][21][22]. Cheng proposed that icosahedral clusters were identified as the basic local structural motifs in Zr 47 Cu 46 Al 7 ternary bulk metallic glasses and that the addition of Al increased the population of icosahedron [16].…”

Section: Introductionmentioning

confidence: 99%

Evolution of the atomic structure of a supercooled Zr55Cu35Al10 liquid

et al. 2017

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Structural data from the supercooled Zr 55 Cu 35 Al 10 ternary alloy liquid were collected in-situ in the temperature range from 1172K to 953 K during continuous cooling using the high-energy synchrotron X-ray Advanced Photon Source. The lowest-r peaks of the pair distribution functions (PDFs) sharpened, becoming higher and narrower, with decreasing temperature. The experimental data are in good agreement with the results of ab-initio molecular dynamics (AIMD) simulations. Quantitative analyses of the simulated structures (clusters, interconnecting zones and free volume) in the supercooled liquid were made based on the tight-bond cluster model. The significance of Al additions on the increase in glass forming ability (GFA) was estimated from the simulated structures and their electronic structure analysis.

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Interpenetrating networks in Zr–Cu–Al and Zr–Cu metallic glasses

Cited by 28 publications

References 27 publications

Role of Zr in icosahedral forming in Cu–Zr metallic glasses

Role of Zr in icosahedral forming in Cu–Zr metallic glasses

Relating glass formation to eutectic composition in Cu_100-xZr_xalloy by molecular dynamics simulation

Evolution of the atomic structure of a supercooled Zr55Cu35Al10 liquid

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Interpenetrating networks in Zr–Cu–Al and Zr–Cu metallic glasses

Cited by 28 publications

References 27 publications

Role of Zr in icosahedral forming in Cu–Zr metallic glasses

Role of Zr in icosahedral forming in Cu–Zr metallic glasses

Relating glass formation to eutectic composition in Cu100-xZrxalloy by molecular dynamics simulation

Evolution of the atomic structure of a supercooled Zr55Cu35Al10 liquid

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Product

Resources

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Relating glass formation to eutectic composition in Cu_100-xZr_xalloy by molecular dynamics simulation