A quinary Ti–Zr–Hf–Be–Cu high entropy bulk metallic glass with a critical size of 12 mm

Zhao, Shaofan; Yang, Guannan; Ding, Hui; Yao, K.

doi:10.1016/j.intermet.2015.02.011

Cited by 81 publications

(22 citation statements)

References 34 publications

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“…As HE-BMGs are a relatively new comer to the glass family, only a few HE-BMGs have been developed up to date; Zhao et al 8 prepared the Zn 20 Ca 20 Sr 20 Yb 20 (Mg 0.55 Li 0.45 ) 20 MG with a rather low glass transition temperature of 50 C while Ding et al 9 demonstrated that the ZrTiHfCuNiBe HE-BMG with a critical diameter as large as 15 mm could be prepared. Recently, a few other HE-BMGs such as ZrTiCuNiBe, 10 PdPtCuNiP, 11 and ZrTiHfCuBe 12 were also reported.…”

Section: Introductionmentioning

confidence: 99%

High thermal stability and sluggish crystallization kinetics of high-entropy bulk metallic glasses

Yang

Liu

Ruan

et al. 2016

Journal of Applied Physics

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Section: Introductionmentioning

confidence: 99%

High thermal stability and sluggish crystallization kinetics of high-entropy bulk metallic glasses

Yang

Liu

Ruan

et al. 2016

Journal of Applied Physics

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“…High-entropy bulk metallic glasses (HE-BMGs) combine both characteristics of MGs and HEAs. Recent literature has reported the specific properties of HE-BMGs, such as excellent glass forming ability [10], ultrahigh compressive strength [11][12][13], soft magnetic properties [14], and good corrosion resistance [15].…”

Section: Introductionmentioning

confidence: 99%

Dynamic mechanical relaxation and thermal creep of high-entropy La30Ce30Ni10Al20Co10 bulk metallic glass

Zhang

Duan

Crespo

et al. 2021

Sci. China Phys. Mech. Astron.

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Dynamic mechanical relaxation is a fundamental tool to understand the mechanical and physical properties of viscoelastic materials like glasses. Mechanical spectroscopy shows that the high-entropy bulk metallic glass (La 30 Ce 30 Ni 10 Al 20 Co 10 ) exhibits a distinct β-relaxation feature. In the present research, dynamic mechanical analysis and thermal creep were performed using this bulk metallic glass material at a temperature domain around the β relaxation. The components of total strain, including ideal elastic strain, anelastic strain, and viscous-plastic strain, were analyzed based on the model of shear transformation zones (STZs). The stochastic activation of STZ contributes to the anelastic strain. When the temperature or external stress is high enough or the timescale is long enough, the interaction between STZs induces viscous-plastic strain. When all the spectrum of STZs is activated, the quasi-steady-state creep is achieved.

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“…In addition, recent reports include HEAs with hcp structure 7,8) comprised mainly heavy-lanthanide elements. Furthermore, it was reported that exact equi-atomic quinary CuNiTiZrHf 9) , BeCuTiZrHf 10) and PdPtCuNiP 11) alloys are formed into non-crystalline structure in a form of bulk metallic glasses as high-entropy BMGs (HE-BMGs). According to literature 3) , the number of HEAs formed into disordered and ordered solid solutions is amounted to be no less than 200 species.…”

Section: Introductionmentioning

confidence: 99%

High-Entropy Alloys Including 3d, 4d and 5d Transition Metals from the Same Group in the Periodic Table

2016

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Exact equi-atomic senary alloys including three elements from 3d, 4d and 5d transition metals (TMs) were investigated for their ability to form solid solutions as high-entropy alloys (HEAs). Three alloys of CoCuPdTiZrHf, CoCuFeTiZrHf and AgAuCuNiPdPt were selected by focusing on (Ti, Zr, Hf) from Early-TMs, and (Cu, Ag, Au) and/or (Ni, Pd, Pt) from Late-TMs based on an alloy design with a help of Pettifor map for binary compounds with several stoichiometries and binary phase diagrams, together with a marginal Al 4 CoNiPdPt alloy. The XRD analysis revealed that the CoCuPdTiZrHf alloy was formed into a bcc, whereas both the CoCuFeTiZrHf and Al 4 CoNiPdPt alloys were a CsCl, and the AgAuCuNiPdPt alloy was dual fcc structures. The observations with optical and scanning-electron microscopes and analysis with energy dispersive X-ray for chemical composition revealed the homogeneous morphologies of these alloys in micrometer scale. The types of crystallographic structures of the CoCuPdTiZrHf, CoCuFeTiZrHf and AgAuCuNiPdPt HEAs and the Al 4 CoNiPdPt alloy can be principally explained by valence electron concentration. Three constituent elements from TMs in the same group enhance the increase in the number of complete solid solutions in the constituent binary systems, leading to forming these HEAs.

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A quinary Ti–Zr–Hf–Be–Cu high entropy bulk metallic glass with a critical size of 12 mm

Cited by 81 publications

References 34 publications

High thermal stability and sluggish crystallization kinetics of high-entropy bulk metallic glasses

High thermal stability and sluggish crystallization kinetics of high-entropy bulk metallic glasses

Dynamic mechanical relaxation and thermal creep of high-entropy La30Ce30Ni10Al20Co10 bulk metallic glass

High-Entropy Alloys Including 3d, 4d and 5d Transition Metals from the Same Group in the Periodic Table

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