Revealing the crystallization kinetics and phase transitions in Mg65Zn30Ca5 metallic glass by nanocalorimetry

Zhang, Li; Xiao, Huan; Li, Shun; Xu, Liming; Zhao, Bingge; Zhai, Qijie; Gao, Yulai

doi:10.1016/j.jallcom.2021.163353

Cited by 12 publications

(3 citation statements)

References 68 publications

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“…Furthermore, with the maximum T rg and activation energy, the Ca 4.2 Mg 68.7 Zn 27.1 MG exhibits the best GFA and thermal stability in the composition range of Ca 4 Mg 72-x Zn 24+x MGs. Zhang et al [ 80 ] realized the controlling phase transitions in Mg 65 Zn 30 Ca 5 MG by nanocalorimetry. An underlying intermediate amorphous phase was detected at heating rates higher than 4000 K/s.…”

Section: Microstructure and Mechanical Properties Of Mg–zn–ca-based Mgsmentioning

confidence: 99%

Biodegradable Mg–Zn–Ca-Based Metallic Glasses

Chao

Liu

et al. 2022

Materials

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Biodegradable Mg–Zn–Ca-based metallic glasses (MGs) present improved strength and superior corrosion resistance, compared to crystalline Mg. In particular, in vivo and in vitro attempts reveal that biodegradable Mg–Zn–Ca-based MGs possess excellent biocompatibility, suggesting that they are ideal candidates for temporary implant materials. However, the limited size and severe brittleness prevent their widespread commercialization. In this review, we firstly summarize the microstructure characteristic and mechanical properties of Mg–Zn–Ca-based MGs. Then, we provide a comprehensive and systematic understanding of the recent progress of the biocorrosion and biocompatibility of Mg–Zn–Ca-based MGs. Last, but not least, the outlook towards the fabrication routes, composition design, structure design, and reinforcement approaches of Mg–Zn–Ca-based MGs are briefly proposed.

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Section: Microstructure and Mechanical Properties Of Mg–zn–ca-based Mgsmentioning

confidence: 99%

Biodegradable Mg–Zn–Ca-Based Metallic Glasses

Chao

Liu

et al. 2022

Materials

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“…Şekil 2b incelendiğinde ısıtma hızlarına bağlı olarak ekzotermik pikin şiddetinin arttığı ve pik maksimum değerinin yüksek sıcaklıklara doğru kaydığı görülmektedir. Bu kaymadan yararlanarak, Avrami parametresi, entalpi değişimi ve aktivasyon enerjileri hesaplanabilir [14].…”

Section: Termal Analiz Yöntemleriunclassified

Investigation of Thermal Properties of Bi1,8-xGaxPb0,2Sr2CaCu2Oy Glass Ceramics

Çavdar

BULUT

İZMİRLİ

et al. 2022

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

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This article presents the variation in the thermal properties of Bi-Ga partial substitution in Bi1,8-xGaxPb0,2Sr2CaCu2Oy (BSCCO) glass ceramic structures. The experimental steps of BSCCO glass ceramic samples are specified. The samples were produced with Bi-Ga partial substitution at different ratio using the melt casting method. Thermal properties were analyzed using the differential thermal analysis (DTA) method. The mass gain in the samples was investigated by the thermogravimetric analysis (TGA) method.. Figure 1 Schematic representation of experimental processes of Bi1,8-xGaxPb0,2Sr2CaCu2Oy samplesPurpose: The aim is to examine the effect of Bi-Ga partial substitution on the thermal properties of the BSCCO glass ceramic structure.Theory and Methods: First, the heat treatment stage of the powder samples was specified. Then, the process of transforming the molten material into glass was performed (Figure 1). Finally, the effect of partial substitution ratio of Ga in the Bi1,8-xGaxPb0,2Sr2CaCu2Oy on thermal properties using DTA and TGA measurements. Results:In the DTA curves of all samples, it is seen that as the heating rate is increased, it shifts to the high temperature regions at the glass transition temperature and crystallization temperature. Avrami parameters were calculated for each sample using the crystallization peaks in the DTA curves. The Avrami parameters of samples were calculated as 3,45; 2,82; 2,25 and 2,58 for A, B, C and D respectively. Compared to the A, the activation energy of the B increased by 1-2 kJ/mol, but this energy level started to decrease as the substitution ratio increased. When the graphs are examined for all samples, it is seen that the crystallization rate increases with the increase in the substitution ratio. Conclusion:Since the required energy range for crystallization will be lower at low temperatures, there will be sufficient time for nucleation. However, as the higher heating rates are increased,

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“…As discussed by Inoue et al [1] and Köster et al [16], polymorphic crystallization in metallic glasses is actually quite rare, and more often, multiple phases form of different composition than the parent matrix phase for which the growth rate is dictated by the diffusional fluxes of the partitioning elements. Reports of partitioning crystallization in Zr-, Fe-, Al-and Mg-based glass-forming systems are found in [3,5,12,[17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Diffusion-Controlled Crystallization Kinetics in Al-Cu-Zr Metallic Glass

Ericsson

Fisk

2022

Metals

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Crystallization is a major challenge in metallic glass production, and predictive models may aid the development of controlled microstructures. This work describes a modeling strategy of nucleation, growth and the dissolution of crystals in a multicomponent glass-forming system. The numerical model is based on classical nucleation theory in combination with a multicomponent diffusion-controlled growth model that is valid for high supersaturation. The required thermodynamic properties are obtained by coupling the model to a CALPHAD database using the Al-Cu-Zr system as a demonstrator. The crystallization of intermetallic Al,CumZrn phases from the undercooled liquid phase were simulated under isothermal as well as rapid heating and cooling conditions (10−1-106Ks−1). The obtained time–temperature transformation and continuous-heating/cooling transformation diagrams agree satisfactorily with the experimental data over a wide temperature range, thereby, demonstrating the predictability of the modeling approach. A comparison of the simulation results and experimental data is discussed.

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Revealing the crystallization kinetics and phase transitions in Mg65Zn30Ca5 metallic glass by nanocalorimetry

Cited by 12 publications

References 68 publications

Biodegradable Mg–Zn–Ca-Based Metallic Glasses

Biodegradable Mg–Zn–Ca-Based Metallic Glasses

Investigation of Thermal Properties of Bi1,8-xGaxPb0,2Sr2CaCu2Oy Glass Ceramics

Modeling of Diffusion-Controlled Crystallization Kinetics in Al-Cu-Zr Metallic Glass

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