Study on microstructure and fracture behavior of tungsten wire reinforced Cu-based and Zr-based bulk metallic glass matrix composites

Khademian, Nima; Gholamipour, Reza

doi:10.1016/j.jnoncrysol.2012.12.030

Cited by 12 publications

(12 citation statements)

References 53 publications

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“…This indicates that W-Zr compound will form preferentially at the interface in Nb-free W/Zr-based alloy composite. Previous research agrees well with the calculation182425. On the other hand, it can be predicted that Nb will segregate on the W surface in Nb-containing system and restrain the reaction between W and Zr.…”

Section: Resultssupporting

confidence: 87%

“…Inappropriate infiltration process easily results in the interfacial reaction and erosion to the W fiber. In Zr-based alloys or Zr-containing Cu-based alloys, the strong interaction between Zr and W always produces the W-Zr phase at the interface18. From the viewpoint of atomic interaction, the elements possessing stronger interaction with W need to be found out.…”

Section: Resultsmentioning

confidence: 99%

“…The strengthes of the W fiber of 0.3 μm and the Vitreloy 1 alloy are 2200 MPa15 and about 1900 MPa79, respectively, and the calculated strength of the corresponding composite is about 2140 MPa. The difference between the theoretical and experimental strength also exists in many other reports161718. This means the compositing procedure weakens the composite's mechanical property, which becomes the main obstacle of the application of BMGCs.…”

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confidence: 96%

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Atomic interaction mechanism for designing the interface of W/Zr-based bulk metallic glass composites

Sha

et al. 2015

Sci Rep

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The interaction between active element Zr and W damages the W fibers and the interface and decreases the mechanical properties, especially the tensile strength of the W fibers reinforced Zr-based bulk metallic glass composites (BMGCs). From the viewpoint of atomic interaction, the W-Zr interaction can be restrained by adding minor elements that have stronger interaction with W into the alloy. The calculation about atomic interaction energy indicates that Ta and Nb preferred to segregate on the W substrate surface. Sessile drop experiment proves the prediction and corresponding in-situ coating appears at the interface. Besides, the atomic interaction mechanism was proven to be effective in many other systems by the sessile drop technique. Considering the interfacial morphology, Nb was added into the alloy to fabricate W/Zr-based BMGCs. As expected, the Nb addition effectively suppressed the W-Zr reaction and damage to W fibers. Both the compressive and tensile properties are improved obviously.

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Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 96%

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Atomic interaction mechanism for designing the interface of W/Zr-based bulk metallic glass composites

Sha

et al. 2015

Sci Rep

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“…Tungsten fiber (W f ) reinforced bulk metallic glass (BMG) composites have attracted widespread attention due to its excellent mechanical performance [1][2][3][4][5][6][7][8][9][10][11], high density, significantly adiabatic shearing and self-sharpening behavior [9,12,13]. Therefore, it is considered as an important potential material in the military field, such as the kinetic energy penetrators [9].…”

Section: Introductionmentioning

confidence: 99%

“…Up to now, numerous researchers have investigated the mechanical properties of the W f /BMG composites under quasi-static loading and obtained some significant results [1][2][3][4][5][6][7][8]10,11]. However, it is essential to study the dynamic mechanical behavior, since the structures made by these composites are often subjected to high strain rate loading during their services.…”

Section: Introductionmentioning

confidence: 99%