A highly processable metallic glass: Zr41.2Ti13.8Cu12.5Ni10.0Be22.5

Peker, A.; Johnson, William L.

doi:10.1063/1.110520

Cited by 2,380 publications

(1,063 citation statements)

References 10 publications

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“…Bulk metallic glasses (BMGs) have a unique range of properties that make them of considerable scientific and technological interest [1][2][3][4][5]. Their atomic structures are amorphous, without crystalline order, which means that no dislocation defects exist, and so BMGs can have strengths "far exceeding any conventional metallic material" [6].…”

Section: Introductionmentioning

confidence: 99%

Atomic structure of biodegradable Mg-based bulk metallic glass

Christie

2015

Phys. Chem. Chem. Phys.

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We have used highly accurate first-principles molecular dynamics simulations to elucidate the structure of Mg 60 Zn 35 Ca 5 and Mg 72 Zn 23 Ca 5 bulk metallic glasses, which are candidate materials for biomedical implants; these two compositions exhibit different behaviours when implanted. The environments of each species are different, and average coordination numbers are ∼ 13 for Mg, ∼ 11 for Zn and ∼ 18 − 19 for Ca. A wide range of local environments were found and icosahedral motifs, often seen in bulk metallic glasses, were among the most common for both Mg and Zn.Through the computation of a chemical short-range order parameter, a moderate avoidance of ZnZn bonding over Zn-Mg or Zn-Ca was observed. No statistically significant difference in structure was observed between the two compositions.

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Section: Introductionmentioning

confidence: 99%

Atomic structure of biodegradable Mg-based bulk metallic glass

Christie

2015

Phys. Chem. Chem. Phys.

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“…However, during the last decade, some exceptions have been reported because of the discoveries of stabilized supercooled liquid alloys without crystallization even during cooling at slow rates below 100 K/s [1,2]. As a result, bulk amorphous alloys have been prepared in a number of alloy systems such as Mg- [3], Ln(lanthanide)- [4], Zr- [5,6], Fe- [7], Pd-Cu- [8], Ti- [9], Ni- [10] and Co- [11] bases and have gained some applications due to their unique mechanical properties, chemical properties and good workability resulting from the amorphous structure. It has subsequently been found that the use of the stabilized liquid also gives rise to bulk amorphous alloys containing nanocrystalline [12] and nanoquasicrystalline [13] particles with good mechanical properties in the Zr-based alloy systems.…”

Section: Introductionmentioning

confidence: 99%

High-strength Zr-based bulk amorphous alloys containing nanocrystalline and nanoquasicrystalline particles

Inoue

Fan

Saida

et al. 2000

Science and Technology of Advanced Materials

113

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It was recently found that the addition of special elements leading to the deviation from the three empirical rules for the achievement of high glass-forming ability causes new mixed structures consisting of the amorphous phase containing nanoscale compound or quasicrystal particles in Zr-Al-Ni-Cu-M (M Ag, Pd, Au, Pt or Nb) bulk alloys prepared by the copper mold casting and squeeze casting methods. In addition, the mechanical strength and ductility of the nonequilibrium phase bulk alloys are significantly improved by the formation of the nanostructures as compared with the corresponding amorphous single phase alloys. The composition ranges, formation factors, preparation processes, unique microstructures and improved mechanical properties of the nanocrystalline and nanoquasicrystalline Zr-based bulk alloys are reviewed on the basis of our recent results reported over the last two years. The success of synthesizing the novel nonequilibrium, highstrength bulk alloys with good mechanical properties is significant for the future progress of basic science and engineering. ᭧

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“…However, in spite of metallic bonding, the lack of dislocations or grain boundary makes the BMGs exhibit shear localization under loading at room temperature, and leads to fracture immediately after yielding of the materials [1][2][3][4]. Since BMGs themselves have relatively low melting points and high resistance to heterogeneous nucleation of crystals, considerable effort has been devoted to the development of BMG matrix composites as a way to further improve the mechanical properties compared to monolithic BMGs.…”

Section: Introductionmentioning

confidence: 99%

Formation, thermal stability and deformation behavior of graphite-flakes reinforced Cu-based bulk metallic glass matrix composites

Yangshan

Shek

Guan

et al. 2006

Materials Science and Engineering: A

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Graphite-flake reinforced Cu 47 Ti 34 Zr 11 Ni 8 bulk metallic glass matrix composite was fabricated by water-cooled copper mould cast. Most of the graphite flakes still keep unreacted and distribute uniformly in the amorphous matrix except that some reactive wetting occurs by the formation of TiC particles around the flakes. It reveals that the presence of graphite flakes does not affect the onset of the glass transition temperature, crystallization reaction and liquidus of the metallic glass. The resulting material shows obvious serrated flow and higher fracture strength under room temperature compressive load, comparing with the monolithic bulk metallic glass (BMG). Three types of interaction between the shear bands and graphite flakes, namely, shear band termination, shear bands branching and new shear bands formation near the graphite flakes can be observed by quasi-static uniaxial compression test and bonded interface technique through Vickers indentation.

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A highly processable metallic glass: Zr41.2Ti13.8Cu12.5Ni10.0Be22.5

Cited by 2,380 publications

References 10 publications

Atomic structure of biodegradable Mg-based bulk metallic glass

Atomic structure of biodegradable Mg-based bulk metallic glass

High-strength Zr-based bulk amorphous alloys containing nanocrystalline and nanoquasicrystalline particles

Formation, thermal stability and deformation behavior of graphite-flakes reinforced Cu-based bulk metallic glass matrix composites

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