Mechanical properties of metallic glass matrix composites: Effects of reinforcement character and connectivity

Fu, Xiaoling; Li, Y.; Schuh, Christopher A.

doi:10.1016/j.scriptamat.2006.12.010

Cited by 50 publications

(25 citation statements)

References 22 publications

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“…At this stage, the connectivity between the crystalline phases is practically continuous. The effect of the percolation on the mechanical performance will be analysed in more detail in section 3. threshold previously reported [28] and this value also is within the range of 30 to 50 % observed by Pauly et al [22].…”

Section: Accepted Manuscriptsupporting

confidence: 91%

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Antimicrobial and wear performance of Cu-Zr-Al metallic glass composites

et al. 2017

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The antimicrobial and wear behaviour of metallic glass composites corresponding to the Cu 50+x (Zr 44 Al 6 ) 50-x system with x=(0, 3 and 6) has been studied. The three compositions consist of crystalline phases embedded in an amorphous matrix and they exhibit crystallinity increase with increasing Cu content, i.e., decrease of the glass-forming ability. The wear resistance also increases with the addition of Cu as indirectly assessed from H/E r and H

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Section: Accepted Manuscriptsupporting

confidence: 91%

“…The embrittlement enhancement when percolation of the crystalline phase takes place suggests that the intermetallic phases are inherently brittle [28].…”

Section: Accepted Manuscript 11mentioning

confidence: 99%

Antimicrobial and wear performance of Cu-Zr-Al metallic glass composites

et al. 2017

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“…This agrees with previous studies, which showed that the plasticity of BMG composites can be improved by the addition of a secondary phase, attributed to load sharing, and load transfer from the amorphous matrix to the reinforcement phase. [29] The reinforcement may also act as an obstacle to shear band propagation so that multiple shear bands form and propagate collectively resulting in the activation of a plastic deformation mode. The critical volume fraction of tungsten that enables plastic deformation will certainly be dependent upon details of the glass composition and structure as well as the properties and characteristics of the compositing phase.…”

Section: Resultsmentioning

confidence: 99%

Mechanical Properties of an Fe‐Based SAM2×5‐630 Metallic Glass Matrix Composite with Tungsten Particle Additions

et al. 2018

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We present the role of tungsten additions on the mechanical properties of a Fe-based structural amorphous metal (SAM2Â5-630) containing crystalline tungsten. Matrix cracking by microindentation is inhibited by the addition of tungsten and indicates that tungsten improves the fracture toughness. Response surfaces from nanoindentation arrays indicate that the hardness and modulus of the matrix phase are increased by tungsten additions. Bulk composites with 30 vol% tungsten subjected to 4-point flexure exhibited brittle fracture behavior and the characteristic strength and Weibull modulus were 165 and 8.7 MPa, respectively. The addition of tungsten did not cause devitrification of the matrix phase.

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“…Pauly, Liu, and Fu et al concluded the critical crystalline volume fraction for the microstructural transition in Cu-Zr-Al BMG composites was determined to lie between 30 and 50 vol. % [29,30,55], while it is about 35 vol. % for Zr-based BMG composites.…”

Section: Primary Precipitates From Partially Crystallized Cu-zr-al-comentioning

confidence: 96%

Glass-Forming Ability and Early Crystallization Kinetics of Novel Cu-Zr-Al-Co Bulk Metallic Glasses

Han

Qin

et al. 2016

Metals

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Abstract:In recent years, CuZr-based bulk metallic glass (BMG) composites ductilized by a shape memory B2 CuZr phase have attracted great attention owing to their outstanding mechanical properties. However, the B2 CuZr phase for most CuZr-based glass-forming compositions is only stable at very high temperatures, leading to the uncontrollable formation of B2 crystals during quenching. In this work, by introducing Co (i.e., 4, 5, and 6 at. %) and 10 at. % Al into CuZr-based alloys, the relatively good glass-forming ability (GFA) of CuZr-based alloys still can be achieved. Meanwhile, the B2 phase can be successfully stabilized to lower temperatures than the final temperatures of crystallization upon heating CuZr-based BMGs. Unlike previous reported CuZr-based BMGs, the primary crystallization products upon heating are mainly B2 CuZr crystals but not CuZr 2 and Cu 10 Zr 7 crystals. Furthermore, the primary precipitates during solidification are still dominated by B2 crystals, whose percolation threshold is detected to lie between 10 ± 2 vol. % and 31 ± 2 vol. %. The crystallization kinetics underlying the precipitation of B2 crystals was also investigated. Our results show that the present glass-forming composites are promising candidates for the fabrication of ductile CuZr-based BMG composites.

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Mechanical properties of metallic glass matrix composites: Effects of reinforcement character and connectivity

Cited by 50 publications

References 22 publications

Antimicrobial and wear performance of Cu-Zr-Al metallic glass composites

Antimicrobial and wear performance of Cu-Zr-Al metallic glass composites

Mechanical Properties of an Fe‐Based SAM2×5‐630 Metallic Glass Matrix Composite with Tungsten Particle Additions

Glass-Forming Ability and Early Crystallization Kinetics of Novel Cu-Zr-Al-Co Bulk Metallic Glasses

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