The effect of thermal history on structure and mechanical properties of Cu64Zr36 metallic glass

Mo, Jinyong; Shen, Baolong; Wan, Yixing; Zhou, Zhidan; Sun, Bo; Liang, Xiubing

doi:10.1016/j.jnoncrysol.2019.119742

Cited by 11 publications

(3 citation statements)

References 43 publications

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“…10,11 In fact, the micro-mechanism of rapid solidication is of long-standing interest for their importance in both fundamental and applied research. 13,14 It is widely known that the cooling rate plays a key role during solidication. When a liquid metal is cooled down, either a crystalline solid or an amorphous solid will form depending on the cooling rate.…”

Section: Introductionmentioning

confidence: 99%

Atomic structure evolutions and mechanisms of the crystallization pathway of liquid Al during rapid cooling

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Atomic structure evolutions and mechanisms of the crystallization pathway of liquid Al during rapid cooling

et al. 2021

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“…However, the investigations by MD simulations suggested that the effect of T q on the formation of MG is negligible. [49] For the investigations on the effect of melt treatment, Zrbased MGs were often chosen as model materials because their superior GFA allows changes of T q in a wide temperature range. [3,50] Additionally, induction melting in a quartz tube was usually used to overheat the molten alloys because the temperature measurement is more convenient during overheating.…”

Section: Introductionmentioning

confidence: 99%

Effect of overheating-induced minor addition on Zr-based metallic glasses

Yang 杨,

Bo 薄,

Huang 黄

et al. 2024

Chinese Phys. B

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Melt treatment is well known to have an important influence on the properties of metallic glasses (MGs). However, for the MGs quenched from different melt temperatures with a quartz tube, the underlying physical origin responsible for the variation of properties remains poorly understood. In the present work, we systematically studied the influence of melt treatment on the thermal properties of a Zr50Cu36Al14 glass-forming alloy and unveiled the microscopic origins. Specifically, we quenched the melt at different temperatures ranging from 1.1T l to 1.5T l (T l is the liquidus temperature) to obtain melt-spun MG ribbons and investigated the variation of thermal properties of the MGs upon heating. We found that glass transition temperature, T g , increases by as much as 36 K, and the supercooled liquid region disappears in the curve of differential scanning calorimetry when the melt is quenched at a high temperature up to 1.5T l . The careful chemical analyses indicate that the change in glass transition behavior originates from the incorporation of oxygen and silicon in the molten alloys. The incorporated oxygen and silicon can both enhance the atomic interactions between atoms, which renders the cooperative rearrangements of atoms difficult, and thus enhance the kinetic stability of the MGs.

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“…Metallic glasses, which are frequently generated through rapid solidification and present amorphous structures with shortrange order, have become a consistently active field owing to their attractive properties and intriguing origins [17][18][19][20][21]. Collaborated with experimental proof, the simulation results could not only predict the exact polymorph that the system adopts under various external conditions, but they are also capable of providing a clear picture of the crystallization pathway at an atomic level, which helps to better understand the mechanisms of crystal growth and the formation of different phases [22][23][24][25][26][27][28][29]. Furthermore, the intricate coupling of thermodynamic and kinetic factors is able to be identified by molecular simulations [30].…”

Section: Introductionmentioning

confidence: 99%

Crystallization kinetics, microstructure evolution, and mechanical responses of Cr-Co alloys

Wu,

Huang,

Wen

2023

Modelling Simul. Mater. Sci. Eng.

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Understanding the crystallization kinetics of Cr-Co alloys and providing a quantitative characterization of the microstructure evolution during quenching are of practical significance to their industrial applications. Using molecular dynamics simulations, we investigate the solidification of Cr30Co70 and Cr70Co30 subjected to different cooling rates. Besides, the outcomes are examined for their mechanical responses under uniaxial tensile loading. It is disclosed that slower cooling (≤ 1 K/ps) is beneficial to crystallization, while faster quenching generally leads to disordered structures. In the solidified outcomes, regardless of composition ratios and cooling rates, Co-Co bonding is the most favorable compared with that of Co-Cr and Cr-Cr. As for structural order, the Co-rich alloys exhibit a hexagonal close-packed (hcp) dominant crystalline order, while face-centered cubic (fcc) becomes more advantageous in the remaining cases. Among all the samples, the Cr30Co70 obtained with 0.5 K/ps is an exception since it abnormally adopts fcc as a major crystalline order and realizes lower energy than expected. Additionally, under uniaxial tensile loading, a phase transition from fcc or hcp to body-centered cubic (bcc) is identified in the Cr30Co70 samples, while it is absent in the Cr70Co30 ones. These findings can aid in the design, manufacturing, and utilization of Cr-Co alloys in the field of material industry.

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The effect of thermal history on structure and mechanical properties of Cu64Zr36 metallic glass

Cited by 11 publications

References 43 publications

Atomic structure evolutions and mechanisms of the crystallization pathway of liquid Al during rapid cooling

Atomic structure evolutions and mechanisms of the crystallization pathway of liquid Al during rapid cooling

Effect of overheating-induced minor addition on Zr-based metallic glasses

Crystallization kinetics, microstructure evolution, and mechanical responses of Cr-Co alloys

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