Minor Cr alloyed Fe–Co–Ni–P–B high entropy bulk metallic glass with excellent mechanical properties

Li, Mingcan; Guan, Huimin; Ma, Xing; Li, Qiang

doi:10.1016/j.msea.2020.140542

Cited by 28 publications

(8 citation statements)

References 52 publications

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“…[7] Positive heat of mixing in Sn-Cu(Be) pairs is the main reason for the intensification of chemical heterogeneity in this system. Li et al [31] also showed that the minor addition improved the mechanical properties of HEBMGs. Consequently, in this work, we try to show that how the minor addition of elements, including positive or negative heat of mixing, into a high entropy system alters the dynamic relaxation and crystallization evolution in a HEBMG system.…”

Section: Introductionmentioning

confidence: 96%

Crystallization evolution and relaxation behavior of high entropy bulk metallic glasses using microalloying process

Li¹,

Jiang²,

Pandey³

2021

Chinese Phys. B

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The role of the microalloying process in relaxation behavior and crystallization evolution of Zr20Cu20Ni20Ti20Hf20 high entropy bulk metallic glass (HEBMG) was investigated. We selected Al and Nb elements as minor elements, which led to the negative and positive effects on the heat of mixing in the master HEBMG composition, respectively. According to the results, both elements intensified β relaxation in the structure; however, α relaxation remained stable. By using different frequencies in dynamic mechanical analysis, it was revealed that the activation energy of β relaxation for the Nb-added sample was much higher, which was due to the creation of significant structural heterogeneity under the microalloying process. Moreover, it was found that Nb addition led to a diversity in crystallization stages at the supercooled liquid region. It was suggested that the severe structural heterogeneity in the Nb-added sample provided multiple energy-level sites in the structure for enhancing the crystallization stages.

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Section: Introductionmentioning

confidence: 96%

Crystallization evolution and relaxation behavior of high entropy bulk metallic glasses using microalloying process

Li¹,

Jiang²,

Pandey³

2021

Chinese Phys. B

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“…Due to their disordered atomic structure, metallic glasses (MGs) typically exhibit superior mechanical properties and excellent viscous fow formability [9][10][11][12][13]. Hence, a great interest has been taken by researchers to employ this kind of metallic alloys in the NIL method [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Mechanism of Imprinting Process in the Ni-P Metallic Glass Films: A Molecular Dynamics Study

Riyadi

Sivaraman

Wais³

et al. 2023

Advances in Materials Science and Engineering

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In this study, the molecular dynamics (MD) simulation was used to evaluate the role of imprinting temperature and the mold-cavity geometry on the imprinted Ni-P metallic glass (MG) films. Considering the outcomes of simulation, it was found that the tip-like and groove patterns showed different filling time for the imprinting process. At room temperature (300 K), the plastic deformation in the tip-like pattern was in a ring shape enclosing the mold, while the plastic deformation in the groove-pattern geometry was mainly localized at the wall of mold. Moreover, it was determined that the imprinting at high temperature (700 K) led to the shortening of pattern filling time and the decrease of loading force in both geometries. The strain concentration and localized plastic deformation were also removed in the high-temperature imprinting process. On the other hand, the unloading process at room temperature (300 K) improved the imprinting quality due to the lower elastic recovery.

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“…Owing to their amorphous structure, bulk metallic glasses (BMGs) exhibit unique rheological and mechanical properties, opening up many possibilities to apply them in advanced engineering systems [1][2][3][4]. However, despite their crystalline counterparts, BMGs show complex relaxation behaviors making it necessary to precisely evaluate their glassy microstructure [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Influence of Microalloying Process on Dynamic Mechanical Relaxation of ZrCo-Based Amorphous Alloy

Romero-Parra

Patra

Fahim³

et al. 2022

Advances in Materials Science and Engineering

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In this study, the dynamic mechanical spectroscopy was used to characterize the effects of minor Ni addition on the relaxation behavior of ZrCoAl bulk metallic glass (BMG). For this purpose, the Kohlrausch–Williams–Watts (KWW) function and quasi-point defect (QPD) model were used for evaluation of relaxation under the different aging temperatures. The results indicated that the Ni addition shifted the relaxation process to the higher temperatures. Moreover, the estimations showed that the activation energy of relaxation was 5.951 eV and 6.205 eV for ZrCoAl and ZrCoAlNi, respectively. It was also revealed that the microalloying process enhanced the structural defects in the system and led to the improvement of dynamic heterogeneity in the BMG. Comparing the physical models, it is suggested that a small change in the structural defects intensifies the dynamic heterogeneity in the material.

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Minor Cr alloyed Fe–Co–Ni–P–B high entropy bulk metallic glass with excellent mechanical properties

Cited by 28 publications

References 52 publications

Crystallization evolution and relaxation behavior of high entropy bulk metallic glasses using microalloying process

Crystallization evolution and relaxation behavior of high entropy bulk metallic glasses using microalloying process

Mechanism of Imprinting Process in the Ni-P Metallic Glass Films: A Molecular Dynamics Study

Influence of Microalloying Process on Dynamic Mechanical Relaxation of ZrCo-Based Amorphous Alloy

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