Effect of relaxation and primary nanocrystallization on the mechanical properties of Cu60Zr22Ti18 bulk metallic glass

Concustell, A.; Alcalá, G.; Mato, S.; Woodcock, T.G.; Gebert, A.; Eckert, J.; Baró, Maria Dolores

doi:10.1016/j.intermet.2005.04.003

Cited by 61 publications

(22 citation statements)

References 29 publications

(43 reference statements)

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“…It is interesting to note that nanocrystallization produced in different spraying conditions results in harder coatings. Concustell et al [32] also Fig. 4.…”

Section: Mechanical Propertiesmentioning

confidence: 76%

Influence of Cold Gas Spray process conditions on the microstructure of Fe-based amorphous coatings

Henao

Concustell

Cano

et al. 2015

Journal of Alloys and Compounds

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a b s t r a c tFe-based amorphous metallic coatings were prepared by Cold Gas Spray process. Through this study, the effects of the process conditions such as spraying distance, gas pressure and temperature on the microstructure of as-sprayed coatings are evaluated. Microstructural studies show that the coatings can present a densely layered structure with porosity below 0.5% and thickness around 800 lm depending on the process conditions. Precipitation of nanocrystals in as-sprayed coatings is observed and present results show its dependence on the thermal and kinetic energy implicated in the process. In general, when gas temperature and pressure decreased, in the studied range, coatings displayed a dense and amorphous structure.

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“…It is interesting to note that nanocrystallization produced in different spraying conditions results in harder coatings. Concustell et al [32] also Fig. 4.…”

Section: Mechanical Propertiesmentioning

confidence: 76%

Influence of Cold Gas Spray process conditions on the microstructure of Fe-based amorphous coatings

Henao

Concustell

Cano

et al. 2015

Journal of Alloys and Compounds

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“…23,48) This result is in line with the negligible effect of structural relaxation caused by short-time annealing on the amount of plastic deformation as long as a critical minimum concentration of free volume still exists in the relaxed metallic glass, as it was already reported by other researchers. 49,50) The deformation mode is noted to become brittle without any microplasticity for the specimens annealed for 30 min or more implying a detrimental effect of annealing-induced nanocrystallization on the room temper- Specifically, the specimen annealed for 60 min shows a drastic decrease of its maximum strength down to 1327 MPa implying an annealing-induced embrittlement due to a long exposure time in the supercooled liquid region, during which the two onset exothermic events were passed through in the isothermal DSC curve shown in Fig. 1.…”

Section: Resultsmentioning

confidence: 99%

Structural Relaxation and Crystallization of a Zr44Ti11Cu9.8Ni10.2Be25 Bulk Metallic Glass

et al. 2007

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The influence of annealing on the structural changes and the room temperature mechanical properties of a Zr 44 Ti 11 Cu 9:8 Ni 10:2 Be 25 bulk metallic glass has been investigated. The structural evolution upon relaxation or crystallization after annealing at a temperature within the supercooled liquid region was studied by thermal analysis, x-ray diffraction, transmission electron microscopy, extended x-ray absorption fine structure and dilatometer measurements. The effects of structural relaxation and nanocrystallization on the mechanical properties were also examined by hardness and compression tests using specimens annealed for various times. The apparent disappearance of plastic strain was found to be due to embrittlement induced by considerable crystallization of the amorphous phase.

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“…If the excessive free volume is introduced by plastic deformation, a less dense randomlypacked structure will be obtained, leading to less restriction on the shear-band movement and decrease in hardness of the amorphous alloys. [12] In some cases, the free-volume reduction and annihilation by annealing the samples below the glass-transition temperature (T g ) and above T g , respectively, may result in brittleness due to the reduced or absent propensity for the shear-band formation. [13][14][15][16] Thus, the change of the free volume and crystallization may yield different deformation and flow behaviors that may influence the wear performance of glass-forming alloys.…”

Section: Introductionmentioning

confidence: 99%

Tribological Studies of a Zr‐Based Glass‐Forming Alloy with Different States

Jiang

Fan

et al. 2009

Adv Eng Mater

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The tribological characteristics of a glass‐forming alloy, Zr52.5Cu17.9Ni14.6Al10.0Ti5.0, in atomic percent (at.%, Vit 105), with different microstructural states have been investigated. Friction and wear studies were conducted using a ball‐on‐flat reciprocating sliding apparatus against an AISI E52100 bearing steel under dry condition. The observed wear resistance in an ascending order is: the deformed, creep‐tested, and as‐cast states. Wear analyses suggested that the wear processes of glass‐forming alloys involved abrasion, adhesion, and oxidation. The differences in hardness, free volume, and brittleness in different states significantly affected the friction and wear behaviors of the glass‐forming alloys.

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Effect of relaxation and primary nanocrystallization on the mechanical properties of Cu60Zr22Ti18 bulk metallic glass

Cited by 61 publications

References 29 publications

Influence of Cold Gas Spray process conditions on the microstructure of Fe-based amorphous coatings

Influence of Cold Gas Spray process conditions on the microstructure of Fe-based amorphous coatings

Structural Relaxation and Crystallization of a Zr<SUB>44</SUB>Ti<SUB>11</SUB>Cu<SUB>9.8</SUB>Ni<SUB>10.2</SUB>Be<SUB>25</SUB> Bulk Metallic Glass

Tribological Studies of a Zr‐Based Glass‐Forming Alloy with Different States

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