A Ti–Zr–Be–Fe–Cu bulk metallic glass with superior glass-forming ability and high specific strength

Gong, Pan; Wang, X.; Shao, Yang; Chen, N.; Liu, Xue; Yao, K.

doi:10.1016/j.intermet.2013.08.003

Cited by 47 publications

(22 citation statements)

References 42 publications

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“…The properties of the alloy melt were set as typical values of common BMGs prepared by this method. [19][20][21] The simulations were performed in ANSYS using the PLANE77 thermal solid elements. In the water quenching model, the element size was set as 0.5 mm.…”

Section: Simulationmentioning

confidence: 99%

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A study of cooling process in bulk metallic glasses fabrication

et al. 2015

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To study the temperature distribution and evolution during bulk metallic glasses fabrication, finite element method was taken to simulate the cooling process in glassy alloys fabricated by water quenching and copper mold casting. The temperature distribution and evolution in different-sized samples in the two methods were successfully reproduced. The result showed that the temperature distribution in the alloy was strongly affected by fabricating method. Two relations were then proposed to estimate the cooling rate in different-sized samples prepared by these two methods. By comparing the reported data of critical size and critical cooling rate, we showed that the reported critical size and critical cooling rate of metallic glasses didn’t follow a heat transfer relation. Those critical-sized glassy alloys actually experienced cooling rates much larger than the critical cooling rates estimated by the classical nucleation theory or experiments on milligram-scaled samples. It results from the increasing degree of heterogeneity with sample size, and therefore a larger sample requires a faster cooling rate to avoid crystallization. This work clearly shows the temperature field evolution in bulk metallic glasses fabrication and reveals that the critical cooling rate of metallic glasses might be size-dependent.

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Section: Simulationmentioning

confidence: 99%

“…12,[19][20][21] T N was selected as ∼0.8T M . Then two series of data of cooling rate R versus diameter D could be obtained.…”

Section: B Evolution Of Cooling Rate With Increasing Sample Sizementioning

confidence: 99%

A study of cooling process in bulk metallic glasses fabrication

et al. 2015

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“…The specific strength values of Ti-based BMGs are universally over 3.5 × 10 5 N m kg −1 , which is significantly higher than the typical titanium alloy Ti-6Al-4V (2.6 × 10 5 N m kg −1 ) [4,5]. Ti-based BMGs also have many other outstanding properties, including good corrosion resistance [6,7], good biocompatibility [8][9][10], and good glass-forming-ability (GFA) [11,12], having potential applications in the fields of consumer electronics, automotive, biomedical devices, aerospace, and so on [13,14]. However, some Ti-based BMGs, especially the alloys with compositions within the range of best GFA in each alloy system, often show brittle deformation behaviors and the compression plasticity at room temperature is poor.…”

Section: Introductionmentioning

confidence: 99%

“…However, some Ti-based BMGs, especially the alloys with compositions within the range of best GFA in each alloy system, often show brittle deformation behaviors and the compression plasticity at room temperature is poor. For example, among Ti-Zr-Be-Fe-Cu BMG alloys, the GFA of Ti 37.31 Zr 22.75 Be 25.48 Fe 5.46 Cu 9 BMG is the best one, and the critical size of as-cast rod with full glassy structure is >32 mm in diameter, but its plasticity is relatively poor (less than 1%) [12]. If the Cu or Fe content of Ti-Zr-Be-Fe-Cu alloys changes (so-called alloying), then the plasticity would be greatly improved but the GFA would be obviously decreased [12,15,16].…”

Section: Introductionmentioning

confidence: 99%

“…For example, among Ti-Zr-Be-Fe-Cu BMG alloys, the GFA of Ti 37.31 Zr 22.75 Be 25.48 Fe 5.46 Cu 9 BMG is the best one, and the critical size of as-cast rod with full glassy structure is >32 mm in diameter, but its plasticity is relatively poor (less than 1%) [12]. If the Cu or Fe content of Ti-Zr-Be-Fe-Cu alloys changes (so-called alloying), then the plasticity would be greatly improved but the GFA would be obviously decreased [12,15,16]. For high strength structural materials, certain plasticity usually is required not only for mechanical property, but also for service safety [17].…”

Section: Introductionmentioning

confidence: 99%

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Improved Plasticity of Ti-Based Bulk Metallic Glass at Room Temperature by Electroless Thin Nickel Coating

Wang¹,

Hu²,

Zhao³

et al. 2017

Metals

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By restricting the dilated deformation, surface modification can stimulate multiple shear banding and improve the plasticity of bulk metallic glasses (BMGs). Aimed at modifying the surface of BMGs by thin layers, a crystalline Ni coating with ultrafine grains was coated on the surface of a Ti-based BMG by electroless plating. With a thickness of about 10 µm, the prepared thin coating could effectively limit the fast propagation of primary shear bands and stimulate the nucleation of multiple shear bands. As a result, the compression plasticity of the coated Ti-based BMG was improved to about 3.7% from near 0% of the non-coated BMG. Except for a small amount of Ni coating was adhered to the BMG substrate after fracture, most of the coatings were peeled off from the surface. It can be attributed to the abnormal growth of some coarse grains/particles in local region of the coating, which induces a large tensile stress at the interface between the coating and the BMG substrate. It is suggested that, for electroless nickel plating, improving the adhesive bonding strength between the coating and the substrate has a better geometric restriction effect than simply increasing the thickness of the coating.

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Nanoscale Confinement of Dip‐Pen Nanolithography Written Phospholipid Structures on CuZr Nanoglasses

Vasantham,

Boltynjuk,

Nandam

et al. 2023

Adv Materials Inter

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Nanoglasses have attracted considerable interest among material scientists due to their novel and surprising properties. However, there is still a significant gap in understanding how nanoglasses interact with biomaterials and their effects on living cells. Previous cell studies have reported indications of possible proliferation effects, but a comprehensive understanding of differentiating nanoglass influences from distinct material or topography effects is yet to be established. In this study, the interaction between nanoglass surfaces and phospholipids, which are fundamental components of cell membranes, is investigated. The findings reveal a unique stabilizing effect exhibited by nanoglasses on structures created using lipid dip‐pen nanolithography, preventing their spreading over the surface (“confinement”). This discovery suggests that nanoglasses can potentially influence the structure of cell membranes, providing a conceivable mechanism for how nanoglasses may impact cell behavior.

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A Ti–Zr–Be–Fe–Cu bulk metallic glass with superior glass-forming ability and high specific strength

Cited by 47 publications

References 42 publications

A study of cooling process in bulk metallic glasses fabrication

A study of cooling process in bulk metallic glasses fabrication

Improved Plasticity of Ti-Based Bulk Metallic Glass at Room Temperature by Electroless Thin Nickel Coating

Nanoscale Confinement of Dip‐Pen Nanolithography Written Phospholipid Structures on CuZr Nanoglasses

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