Prominent role of chemical heterogeneity on cryogenic rejuvenation and thermomechanical properties of La–Al–Ni metallic glass

Sohrabi, S.; Ri, M.C.; Jiang, Hongyu; Gu, Lin; Wen, Ping; Sun, Yong; Wang, W.H.

doi:10.1016/j.intermet.2019.106497

Cited by 46 publications

(13 citation statements)

References 33 publications

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“…Consequently, the value of m for the present MG deduced by Equation (6) is about 49.9. It is known that the glass‐forming liquid can be generally divided into three types as strong one possessing high thermal stability and GFA with m < 30 (such as oxide glasses), intermediate one possessing moderate thermal stability and GFA with 30 ≤ m < 100 (such as MGs) and fragile one possessing low thermal stability and GFA with m ≥ 100 (such as polymers) 19,38,65 . Accordingly, the present MG can be expected as the intermediate type with moderate thermal stability and GFA.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, it is believed that the kinetic fragility parameter m can be used as a valuable characteristic parameter for estimating thermal stability and GFA of MGs, 19,38,[59][60][61][62] which is usually given as 63…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, it is believed that the kinetic fragility parameter m can be used as a valuable characteristic parameter for estimating thermal stability and GFA of MGs, 19,38,59–62 which is usually given as 63 :

m = \frac{D T_{0} T_{normalg}}{{(T_{normalg} - T_{0})}^{2} \ln 10},

where D denotes the strength parameter, T 0 represents the approximate value of T g at infinitely slow cooling or heating rate, T g is the glass transition temperature obtained at a certain heating rate ( T g of 0.333 K s −1 is used for the present work). D and T 0 are generally determined by VFT equation 64 :

\ln false(φ false) = \ln false(B false) - \frac{D T_{0}}{T - T_{0}},

where φ denotes heating rate, B is a constant, T denotes the glass transition temperature corresponding to the heating rate φ .…”

Section: Resultsmentioning

confidence: 99%

“…However, it is unavoidable that MGs will change into the corresponding crystalline counterparts for their metastable nature and this can be enhanced with increasing temperatures, which exhibits noticeable effects on their structures and properties 15–19 . Therefore, it is essential to investigate the crystallization behaviors and crystallization kinetics of MGs at various heating conditions, which is significant for tuning the structures and properties of MGs 15–40 . Among them, the nonisothermal crystallization behaviors and crystallization kinetics for MGs with various compositions, that is, multicomponent Zr‐Cu‐Fe‐Al MG, 15 Fe‐Co‐Cr‐Ni‐Zr MG, 16 Zr‐(CuAg)‐Al MG, 17 Fe‐Ni‐P‐B MG, 18 Zr‐Co‐Al‐Cu MG, 24 Fe‐Ni‐Mo‐P‐C‐B‐Cu MG, 25 Ti‐Zr‐Ni‐Cu‐Be MG, 26 Co‐Fe‐Ta‐B MG, 29 Ni‐Nb‐Ti‐Zr‐Co‐Ta MG, 31 Fe‐Cr‐P‐C‐B MG, 32 and Fe‐Co‐Cr‐Mo‐Y‐C‐B MG 33 ; ternary U‐Co‐Al MG, 19 La‐Al‐Co MG, 27 Zr‐Al‐Fe MG, 30 Zr‐Co‐Al MGs, 24,35 Fe‐P‐C MG, 36 Fe‐B‐C MG, 37 La‐Al‐Ni MG, 38 and Pd‐Ni‐P MG 39 ; and binary Cu‐Zr MG, 40 have been extensively researched by Kissinger, Ozawa, Kissinger‐Akahira‐Sunose (KAS), Ozawa‐Flynn‐Wall (OFW), and Vogel‐Fulcher‐Tammann (VFT) approaches using differential scanning calorimeter (DSC).…”

Section: Introductionmentioning

confidence: 99%

“…[15][16][17][18][19] Therefore, it is essential to investigate the crystallization behaviors and crystallization kinetics of MGs at various heating conditions, which is significant for tuning the structures and properties of MGs. Among them, the nonisothermal crystallization behaviors and crystallization kinetics for MGs with various compositions, that is, multicomponent Zr-Cu-Fe-Al MG, 15 Fe-Co-Cr-Ni-Zr MG, 16 Zr-(CuAg)-Al MG, 17 Fe-Ni-P-B MG, 18 Zr-Co-Al-Cu MG, 24 Fe-Ni-Mo-P-C-B-Cu MG, 25 Ti-Zr-Ni-Cu-Be MG, 26 Co-Fe-Ta-B MG, 29 Ni-Nb-Ti-Zr-Co-Ta MG, 31 Fe-Cr-P-C-B MG, 32 and Fe-Co-Cr-Mo-Y-C-B MG 33 ; ternary U-Co-Al MG, 19 La-Al-Co MG, 27 Zr-Al-Fe MG, 30 Zr-Co-Al MGs, 24,35 Fe-P-C MG, 36 Fe-B-C MG, 37 La-Al-Ni MG, 38 and Pd-Ni-P MG 39 ; and binary Cu-Zr MG, 40 have been extensively researched by Kissinger, Ozawa, Kissinger-Akahira-Sunose (KAS), Ozawa-Flynn-Wall (OFW), and Vogel-Fulcher-Tammann (VFT) approaches using differential scanning calorimeter (DSC). Under nonisothermal crystallization conditions, MGs were continuously heated up to complete crystallization by different heating rates.…”

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confidence: 99%

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Nonisothermal crystallization kinetics of Cr‐rich metallic glass Cr_29.4Fe_29.4Mo_14.7C_14.7B_9.8Y₂ with desirable properties

Jian

Zhuo

et al. 2021

Int J of Chemical Kinetics

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The nonisothermal crystallization kinetics for the first crystallization event of Cr-rich metallic glass (MG) Cr 29.4 Fe 29.4 Mo 14.7 C 14.7 B 9.8 Y 2 with desirable properties was systematically studied by Kissinger, Ozawa, Kissinger-Akahira-Sunose (KAS), Ozawa-Flynn-Wall (OFW), and Vogel-Fulcher-Tammann approaches using differential scanning calorimeter. The apparent activation energy (E) for characteristic temperatures deduced by Kissinger approach is comparable with that deduced by Ozawa approach. The E g for the glass transition temperature is smaller than the E p1 for the peak temperature of the first crystallization event and larger than E for other characteristic temperatures, exhibiting that the glass transition is easier than the growth process of the first crystallization event and more difficult than other processes. The local activation energy estimated by KAS and OFW approaches shows approximate tendency of increasing initially and then gradually decreasing, which indicates that the crystallization process is difficult at first and then gradually becomes easy. The local Avrami exponent (n(x)) changes from n(x) > 2.5 to 1.5 < n(x) < 2.5 for crystallization under low heating rate and from n(x) > 2.5 to 0 < n(x) < 1.5 for crystallization under high heating rate, corresponding to a diffusion-governed crystallization changing from enhancing nucleation rate to reducing nucleation rate under low heating rate and from enhancing nucleation rate to preexisting nuclei under high heating rate, respectively. The kinetic fragility parameter shows that the glass-forming liquid of the present MG is intermediate type with moderate glass-forming ability. The results would provide comprehensive insights to understand the formation of Cr-rich MG.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

m = \frac{D T_{0} T_{normalg}}{{(T_{normalg} - T_{0})}^{2} \ln 10},

\ln false(φ false) = \ln false(B false) - \frac{D T_{0}}{T - T_{0}},

where φ denotes heating rate, B is a constant, T denotes the glass transition temperature corresponding to the heating rate φ .…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Nonisothermal crystallization kinetics of Cr‐rich metallic glass Cr_29.4Fe_29.4Mo_14.7C_14.7B_9.8Y₂ with desirable properties

Jian

Zhuo

et al. 2021

Int J of Chemical Kinetics

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Unique Energy‐Storage Behavior Driven by High Entropy in Metallic Glasses

Wang,

Shi,

Shen

et al. 2024

Adv Funct Materials

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The rejuvenation or energy‐storage behavior in metallic glasses (MGs) has been extensively explored for its theoretical and practical significance. However, very limited research focuses on the rejuvenation of high entropy metallic glasses (HEMGs), leaving uncertainties about how configurational entropy influences this process. In this study, cryogenic temperature cycling (CTC) is utilized to unlock the rejuvenation potential of a series of La‐based MGs with different entropy values. Comparative analysis of these MGs reveals that increased entropy boosts the maximum rejuvenation degree from 37% to 65% and widens the range of energy states where rejuvenation occurs. The changed rejuvenation behavior induced by entropy increase, which has never been reported other studies, are related to glass's structures, fragility and coupling degree between β and α relaxations. Besides, a new rejuvenation mechanism is revealed in HEMGs, which differs significantly from unrestricted growth and interconnection of flow units observed in most MGs. The atomic motion in HEMGs is confined within the icosahedral backbone network during CTC. Surprisingly, this local motion can propagate through strong interactions between adjacent atoms, facilitating the activation of α relaxation. These discoveries offer novel approaches to tune energy‐storage behavior of MGs by modulating icosahedral network structures through entropy control.

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Tuning isothermal crystallization kinetics by minor similar solute element substitution in novel La‐(AlGa)‐C metallic glasses

Zhang

et al. 2021

Int J of Chemical Kinetics

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In the present text, the effects of minor similar solute element Ga substitution for Al on the isothermal crystallization kinetics of novel light RE‐based La‐(AlGa)‐C metallic glasses (MGs) were systematically investigated between La60Al26Ga4C10 MG and the precursor La60Al30C10 MG by using phase analysis, Johnson–Mehl–Avrami and Arrhenius using x‐ray diffraction, transmission electron microscopy, and differential scanning calorimetry. The incubation period, the accomplishment time of the whole process, and the diversity of both the precipitated phases and the varying trend of the local Avrami exponent are elevated by minor similar solute element Ga substitution for Al, respectively. Additionally, the Avrami exponent of different isothermal crystallization temperature changes from g n > 2.5 to a combination of values 1.5 < n < 2.5 and a value n > 2.5 given by minor similar solute element Ga substitution for Al, corresponding to the crystallization characteristics changing from crystallization with promoting nucleation rate to a combination of crystallization with a reducing nucleation rate and crystallization with promoting nucleation rate. Moreover, the isothermal crystallization process becomes more difficult after minor similar solute element Ga substitution for Al, due to the reduced Avrami exponent and the intensified local activation energy.

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Prominent role of chemical heterogeneity on cryogenic rejuvenation and thermomechanical properties of La–Al–Ni metallic glass

Cited by 46 publications

References 33 publications

Nonisothermal crystallization kinetics of Cr‐rich metallic glass Cr_29.4Fe_29.4Mo_14.7C_14.7B_9.8Y₂ with desirable properties

Nonisothermal crystallization kinetics of Cr‐rich metallic glass Cr_29.4Fe_29.4Mo_14.7C_14.7B_9.8Y₂ with desirable properties

Unique Energy‐Storage Behavior Driven by High Entropy in Metallic Glasses

Tuning isothermal crystallization kinetics by minor similar solute element substitution in novel La‐(AlGa)‐C metallic glasses

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Prominent role of chemical heterogeneity on cryogenic rejuvenation and thermomechanical properties of La–Al–Ni metallic glass

Cited by 46 publications

References 33 publications

Nonisothermal crystallization kinetics of Cr‐rich metallic glass Cr29.4Fe29.4Mo14.7C14.7B9.8Y2 with desirable properties

Nonisothermal crystallization kinetics of Cr‐rich metallic glass Cr29.4Fe29.4Mo14.7C14.7B9.8Y2 with desirable properties

Unique Energy‐Storage Behavior Driven by High Entropy in Metallic Glasses

Tuning isothermal crystallization kinetics by minor similar solute element substitution in novel La‐(AlGa)‐C metallic glasses

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Product

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Nonisothermal crystallization kinetics of Cr‐rich metallic glass Cr_29.4Fe_29.4Mo_14.7C_14.7B_9.8Y₂ with desirable properties

Nonisothermal crystallization kinetics of Cr‐rich metallic glass Cr_29.4Fe_29.4Mo_14.7C_14.7B_9.8Y₂ with desirable properties