Browsing by Author "Qiao, Jichao"
Now showing items 1-20 of 29
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Achieving structural rejuvenation in metallic glass by modulating ß relaxation intensity via easy-to-operate mechanical cycling
(2022-10-01)
Article
Open AccessStructural rejuvenation is an effective measure to optimize the mechanical properties of metallic glasses (MGs). Sophisticated solutions to rejuvenation include thermal cycling, laser shocking, and multiaxial stress ... -
Amorphous physics and materials: Secondary relaxation and dynamic heterogeneity in metallic glasses: A brief review
(2017-01-01)
Article
Open AccessUnderstanding mechanical relaxation, such as primary (a) and secondary (ß) relaxation, is key to unravel the intertwined relation between the atomic dynamics and non-equilibrium thermodynamics in metallic glasses. At a ... -
Connection between mechanical relaxation and equilibration kinetics in a high-entropy metallic glass
(American Institute of Physics (AIP), 2024-02-02)
Article
Open AccessThe slow transition from an out-of-equilibrium glass towards a supercooled liquid is a complex relaxation phenomenon. In this Letter, we study the correlation between mechanical relaxation and equilibration kinetics in a ... -
Creep and recovery behavior of metallic glasses: a short review
(2024-01)
Article
Open AccessDue to the disordered structure of amorphous alloys, the complex structural dynamics involves the particle rearrangements with a large span in time and size scales. The characterization and mechanism of structural dynamics ... -
Creep deformation in metallic glasses: a global approach with strain as an indicator within transition state theory
(Elsevier, 2024-03-01)
Article
Restricted access - publisher's policyWithin the framework of transition state theory, the isothermal creep behavior of metallic glasses is elucidated through a unique global approach, where the topological state is exclusively linked to measured strain. Our ... -
Delayed elasticity of metallic glasses: Loading time and temperature dependences of the anelastic relaxation
(American Physical Society (APS), 2022-12-09)
Article
Open AccessOne of the hallmarks of disordered matter is the large amplitude of the anelastic deformation, i.e., the fraction of reversible deformation that is not instantaneously recovered after the release of load but is delayed in ... -
Distinct avalanche dynamics detected in metallic glasses with high energy state revealing the crack-like shear banding mechanism
(Elsevier, 2024-03)
Article
Restricted access - publisher's policyWhen a sufficiently high stress is applied to a metallic glass, causing plastic deformation, the material undergoes structural reconfiguration through dissipative slip avalanche events that release local stresses. By ... -
Dynamic mechanical relaxation and thermal creep of high-entropy La30Ce30Ni10Al20Co10 bulk metallic glass
(2021-08-03)
Article
Open AccessDynamic mechanical relaxation is a fundamental tool to understand the mechanical and physical properties of viscoelastic materials like glasses. Mechanical spectroscopy shows that the high-entropy bulk metallic glass ... -
Dynamic mechanical relaxation in LaCe-based metallic glasses: influence of the chemical composition
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-09-17)
Article
Open AccessThe mechanical relaxation behavior of the (La0.5Ce0.5)65Al10(CoxCu1-x)25 at% (x = 0, 0.2, 0.4, 0.6, and 0.8) metallic glasses was probed by dynamic mechanical analysis. The intensity of the secondary ß relaxation increases ... -
Effect of minor addition on dynamic mechanical relaxation in ZrCu-based metallic glasses
(2021-02-01)
Article
Open AccessThe dynamic mechanical behavior of Zr50-xCu34Ag8Al8Pdx (x = 0 and 2) bulk metallic glasses was probed by mechanical spectroscopy. The results suggest that microalloying retards the relaxation dynamics. The physical aging ... -
Effect of physical aging and cyclic loading on power-law creep of high-entropy metallic glass
(2022-07-10)
Article
Open AccessThe power-law relationship between creep rate decay and time is one of the intrinsic characteristics of metallic glasses. In the current work, a La30Ce30Ni10Al20Co10 high-entropy metallic glass was selected as the model ... -
Identifying the high entropy characteristic in La-based metallic glasses
(2021-08-05)
Article
Open AccessHigh temperature deformation was probed in a La-based high entropy metallic glass with an evident slow ß relaxation. The correlation between high configurational entropy and high temperature deformation mechanism was ... -
Inelastic deformation of metallic glasses under dynamic cyclic loading
(2021-03-15)
Article
Open AccessDynamic mechanical analysis was performed in two metallic glasses that show markedly distinct ß relaxation features. The confined flow defects of free-volume zones and the inelastic deformation behavior result into a ... -
Influence of oscillation strain on the dynamic mechanical relaxation of a La-based metallic glass
(Springer, 2023-06-26)
Article
Open AccessDynamic mechanical relaxation processes, particularly secondary relaxation processes, are closely related to the mechanical and physical properties of metallic glasses. Here the effect of oscillation strain amplitude on ... -
Link between shear modulus and enthalpy changes of Ti16.7Zr16.7Hf16.7Cu16.7Ni16.7Be16.7 high entropy bulk metallic glass
(2020-02-29)
Article
Open AccessMechanical and thermal properties of materials are intricately linked. Particularly, this fully applies to metallic glasses. In this work, we study shear modulus behavior and heat effects occurring upon heating up of ... -
Modeling of the Sub-Tg Relaxation Spectrum of Pd42.5Ni7.5Cu30P20 Metallic Glass
(2016-03-17)
Article
Open AccessIn this work we study the mechanical relaxation spectrum of Pd42.5Ni7.5Cu30P20 metallic glass. The effect of aging on the relaxation behavior is analyzed by measuring the internal friction during consecutive heating runs. ... -
Physical aging effects on the dynamic relaxation behavior and mechanical properties of Cu46Zr46Al8 metallic glass
(2017-12-05)
Article
Open AccessMechanical relaxation of glassy materials is strongly influenced by their mechanical and physical properties. In the current study, dynamic mechanical relaxation of Cu46Zr46Al8 metallic glass has been investigated by ... -
Quantifying contribution of hierarchically correlated shear microdomains underlying creep in metallic glass
(2024-03-01)
Article
Restricted access - publisher's policyInvestigation of the strain evolution of a Cu46Zr47Al7 metallic glass (MG) was conducted through creep deformation encompassing various temperature and stress conditions. The fundamental framework of atomic motion was ... -
Relaxation of internal friction and shear viscosity in Zr57Nb5Al10Cu15.4Ni12.6 metallic glass
(2020-09-01)
Article
Open AccessRelaxation of internal friction of Zr57Nb5Al10Cu15.4Ni12.6 metallic glass was investigated by mechanical spectroscopy. The stress relaxation of internal friction with different aging temperature was described by ... -
Reversible anelastic deformation mediated by beta relaxation and resulting two-step deformation in a La60Ni15Al25 metallic glass
(American Physical Society (APS), 2023-07-11)
Article
Open AccessThe stress relaxation dynamics of a La60Ni15Al25 metallic glass were studied in ribbon and bulk samples. In both tensile and single cantilever testing modes, it is observed that the stress decay of deep glass is mediated ...
