Enhancement of glass-forming ability and mechanical behavior of zirconium–lanthanide two-phase bulk metallic glasses

He, Jie; Mattern, N.; Kaban, I.; Dai, Fu–Ping; Song, Kaikai; Yan, Zhijie; Zhao, Jiaqi; Kim, Do Hyang; Eckert, J.

doi:10.1016/j.jallcom.2014.08.226

Cited by 13 publications

(6 citation statements)

References 48 publications

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“…The HAADF results of the 72 W Cu-Zr-Al thin film confirm the presence of two Cu-and Zr-rich amorphous phases. In previous investigations, in situ formed two metallic glass phases have been found in Zr-Cu-Ni-Al [3], Zr-Co-Al-Y [45], Cu-Zr-Al-Nb [46], La-Zr-Al-Cu-Ni [14], and Zr-Ce [47] alloys. The phase separation was observed in either the solidification or reheating process of those metallic glasses, in which the alloy was separated into two different glassy phases with different compositions.…”

Section: Methodsmentioning

confidence: 84%

Fabrication, Corrosion, and Mechanical Properties of Magnetron Sputtered Cu–Zr–Al Metallic Glass Thin Film

Wei

Ying

et al. 2019

Materials

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The appearance of thin film metallic glasses (TFMGs) is gaining increasing interest because of their unique mechanical and anticorrosion properties and potential engineering applications. In this study, Cu-Zr-Al ternary thin film metallic glasses were fabricated by using DC magnetron sputtering equipment with various target powers. The evolution of the structure was systematically investigated by grazing incidence X-ray diffractometer, scanning electron microscopy, and transmission electron microscopy. The deposition rate increases with the increasing of applied target power. The as-deposited thin films show an amorphous structure. The compositional fluctuations on the nanometer scale indicate the presence of two Cu-and Zr-rich amorphous phases. The electrochemical corrosion measurements indicated that Cu-Zr-Al thin film metallic glasses had good corrosion resistance in the sulfuric acid solution. Nanoindentation results showed that the mechanical deformation was found to be homogenous and reproducible with a high value range for the hardness and modulus.

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Section: Methodsmentioning

confidence: 84%

Fabrication, Corrosion, and Mechanical Properties of Magnetron Sputtered Cu–Zr–Al Metallic Glass Thin Film

Wei

Ying

et al. 2019

Materials

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“…In the following years, phase-separated metallic glasses were successfully prepared in several alloys systems: Y-Ti-Al-Co [15], Ni-Nb-Y [16], Cu-Zr-Al-Ag [17]. Generally, these alloys were designed based on the amorphous system with high GFA by addition of some element [3,18]. However, once melt separates into coexistent liquids during quenching, the evolution path of the two liquids composition is complex.…”

Section: Introductionmentioning

confidence: 99%

Liquid Phase Separation and Dual Glassy Structure Formation of Designed Zr-Ce-Co-Cu Alloys

Wang

Yang

et al. 2016

MSF

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Development of liquid-phase separated bulk metallic glasses is retarded due to difficulties in finding of immiscible systems with high glass-forming ability (GFA) of coexistent liquids. Zr-Ce alloy is a typical liquid immiscible system characterized by a liquid miscibility gap. We added Co and Cu into the Zr-Ce immiscible system and optimized the composition of the designed Zr-Ce-Co-Cu immiscible alloys. The solidification experiments were carried out for the quaternary alloys. The result indicates that the melt separated into ZrCo-rich and CeCu-rich liquids upon cooling through the miscibility gap. By optimizing the relative atomic ratio of Co:Cu, the coexistent ZrCo-rich and CeCu-rich liquids automatically assembled eutectic compositions during the liquid-liquid phase separation (LLPS). Under the condition of fast quenching, the two liquids subsequently undergo liquid-to-glass transition, resulting in the formation of composite structure with two glasses in the samples. We successfully developed phased-separated metallic glasses based on the Zr-Ce-Co-Cu immiscible alloys. This work not only strengthens the understanding in the LLPS but also provides a new strategy on the design of the dual glassy composites.

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“…In order to study the effect of the addition elements on the TGFA, the selected third elements are added into the two coexisting immiscible liquids. This raises two important questions [24]: where do the addition elements go and what are their distribution ratios in the two coexisting liquids? Hence, it is necessary to predict the elemental distribution in the system.…”

Section: Resultsmentioning

confidence: 99%

“…The elemental distribution in the ZC-rich and CC-rich liquid solvents is determined by the chemical potential of the solute element in the two coexisting liquids. Accordingly, the following expression can be obtained for the molar distribution ratio for the addition element i between the ZC-rich liquid (L ZC ) and CC-rich liquid (L CC ) solvents [24], where . Here, is the Gibbs free energy of the L ZC and L CC liquids, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…According to the above route of designing phaseseparated metallic glass matrix composites, much attention has been devoted to phase-separated metallic glasses with a two-phase glassy structure [19][20][21][22]. In recent years, extensive research on finding phaseseparating alloy systems with desirable glass-forming ability (GFA) to yield two-phase glassy structures has been performed [23][24][25][26][27][28][29][30]. Our previous investigations indicate that a complex quaternary immiscible Zr-Ce-Co-Cu alloy system with relatively low GFA can be obtained by mixing immiscible Zr-Ce and Co-Cu alloys [31].…”

Section: Introductionmentioning

confidence: 99%

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Effect of addition of elements on two-glass-forming ability of Zr–Ce–Co–Cu immiscible alloys

Wang

Yang

et al. 2017

Materials Science and Technology

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The effects of Al element addition and partial substitution of Ce with La, Pr, and Nd on the two-glass-forming ability of the phase-separating Zr–Ce–Co–Cu alloy system have been studied. The distribution of the additions in the two coexistent immiscible liquids was analysed thermodynamically. The results indicate that Al almost equally distributes in the two liquids, whereas the elements La, Pr, and Nd are predominantly found in the Ce–Cu-rich liquid. X-ray diffraction analysis reveals that these additions obviously enhance the two-glass-forming ability of the coexisting liquids. This work presents a strategy for improving the two-glass-forming ability of immiscible alloys to obtain phase-separated bulk metallic glasses.

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Enhancement of glass-forming ability and mechanical behavior of zirconium–lanthanide two-phase bulk metallic glasses

Cited by 13 publications

References 48 publications

Fabrication, Corrosion, and Mechanical Properties of Magnetron Sputtered Cu–Zr–Al Metallic Glass Thin Film

Fabrication, Corrosion, and Mechanical Properties of Magnetron Sputtered Cu–Zr–Al Metallic Glass Thin Film

Liquid Phase Separation and Dual Glassy Structure Formation of Designed Zr-Ce-Co-Cu Alloys

Effect of addition of elements on two-glass-forming ability of Zr–Ce–Co–Cu immiscible alloys

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