High-entropy alloy and amorphous alloy composites fabricated by ultrasonic vibrations

Liang, Xiong; Zhu, Xiaolong; Li, Xin; Mo, Ruodong; Liu, YongJing; Kai, Wu; Ma, Jiang

doi:10.1007/s11433-020-1560-4

Cited by 20 publications

(4 citation statements)

References 35 publications

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“…These results demonstrate that the high-frequency vibration significantly improves the surface atom mobility, and thus enhancing the atomic diffusion in the bonding interface, which enables the fast cold fusion of various MG ribbons to synthesize composites with metallurgical interfaces among different alloy systems, such as Pd-Zr, Pd-La and Pd-Zr-La MG systems (figures 6(c) and (d)). In addition, by utilizing this reliable bonding behavior, the composites of MGs and other materials can also be fabricated by ultrasonic AM [143]. As shown in figure 6(e), the Zr-based MG ribbons mixed with high entropy alloy (HEA) ribbons are subjected to the ultrasonic loading for several seconds, then the bulk composite sample with a tunable proportion of rigid amorphous phase and soft crystalline phase can be facilely achieved (figure 6(f)).…”

Section: Am Based On Cold Fusionmentioning

confidence: 99%

Recent development of chemically complex metallic glasses: from accelerated compositional design, additive manufacturing to novel applications

et al. 2022

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Metallic glasses or amorphous alloys are an important engineering material that has a history of research of about 80-90 years. While different fast cooling methods were developed for multi-component metallic glasses between 1960s and 1980s, 1990s witnessed a surge of research interest in the development of bulk metallic glasses. Since then, one central theme of research in the metallic-glass community has been compositional design that aims to search for metallic glasses with a better glass forming ability, a larger size and/or more interesting properties, which can hence meet the demands from more important applications. In this review article, we focus on the recent development of chemically complex metallic glasses, such as high entropy metallic glasses, with new tools that were not available or mature yet until recently, such as the state-of-the-art additive manufacturing technologies, high throughput materials design techniques and the methods for big data analyses (e.g. machine learning and artificial intelligence). We also discuss the recent use of metallic glasses in a variety of novel and important applications, from personal healthcare, electric energy transfer to nuclear energy that plays a pivotal role in the battle against global warming.

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Section: Am Based On Cold Fusionmentioning

confidence: 99%

Recent development of chemically complex metallic glasses: from accelerated compositional design, additive manufacturing to novel applications

et al. 2022

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“…Metallic glasses can act as glues for materials of different nature [9]. The crystalline and amorphous alloys can be joined together at low temperatures (for example, using high-frequency vibrations [10,11]) and upon heat treatment, such as sintering [3].…”

Section: Introductionmentioning

confidence: 99%

Towards a Better Understanding of the Interaction of Fe66Cr10Nb5B19 Metallic Glass with Aluminum: Growth of Intermetallics and Formation of Kirkendall Porosity during Sintering

et al. 2023

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Metallic-glass-reinforced metal matrix composites are a novel class of composite materials, in which particles of alloys with an amorphous structure play the role of reinforcement. During the fabrication of these composites, a crystalline metal is in contact with a multicomponent alloy of an amorphous structure. In the present work, the morphological features of the reaction products formed upon the interaction of Fe66Cr10Nb5B19 metallic glass particles with aluminum were studied. The composites were processed via spark plasma sintering (SPS), hot pressing or a combination of SPS and furnace annealing. The reaction products in composites with different concentrations of the metallic glass and different transformation degrees were examined. The products of the interaction of the Fe66Cr10Nb5B19 metallic glass with Al were observed as dense layers covering the residual alloy cores, needles of FeAl3 protruding from the dense shells as well as needles and platelets of FeAl3 distributed in the residual Al matrix. The possible role of the liquid phase in the structure formation of the reaction products is discussed. The formation of needle- and platelet-shaped particles presumably occurred via crystallization from the Al-Fe-based melt, which formed locally due to the occurrence of the exothermic reactions between aluminum and iron. At the same time, aluminum atoms diffused into the solid Fe-based alloy particles, forming an intermetallic layer, which could grow until the alloy was fully transformed. When aluminum melted throughout the volume of the composite during heating of the sample above 660 °C, a similar microstructure developed. In both Al–Fe66Cr10Nb5B19 and Al–Fe systems, upon the reactive transformation, pores persistently formed in locations occupied by aluminum owing to the occurrence of the Kirkendall effect.

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“…Various methods have been developed over the past decades to understand and improve the GFA of MGs or to overcome the GFA limit of existing MG formers. These include the approaches based on thermodynamics [3], the artificial intelligence-guided machine learning [17], the high throughput component selection [18], the 3D printing [19,20], the ultrasonic welding [21][22][23][24][25], and the spark plasma sintering (SPS) method [26]. Among them, the thermoplastic joining seems to be a promising method to synthesize large-sized MGs considering that the processing temperature regime is much lower than the melting temperature [27,28].…”

Section: Introductionmentioning

confidence: 99%

Interface design enabled manufacture of giant metallic glasses

Yang

et al. 2021

Sci. China Mater.

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High-entropy alloy and amorphous alloy composites fabricated by ultrasonic vibrations

Cited by 20 publications

References 35 publications

Recent development of chemically complex metallic glasses: from accelerated compositional design, additive manufacturing to novel applications

Recent development of chemically complex metallic glasses: from accelerated compositional design, additive manufacturing to novel applications

Towards a Better Understanding of the Interaction of Fe66Cr10Nb5B19 Metallic Glass with Aluminum: Growth of Intermetallics and Formation of Kirkendall Porosity during Sintering

Interface design enabled manufacture of giant metallic glasses

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