Gamma relaxation in bulk metallic glasses
WebThe dynamic mechanical relaxation of metallic glasses is closely associated with the physical and mechanical properties. In the current work,the dynamic mechanical relaxation behaviors of Cu 46Zr 45Al 7Y 2 and La 65Al 14(Cu 5/6Ag 1/6) 11(Ni 1/2Co 1/2) 10 bulk metallic glasses are investigated by mechanical spectroscopy. In general, metallic WebSep 14, 2014 · The aim of this paper is to provide a state-of-the-art review on β-relaxation in a relatively new kind of glassy materials, the metallic glasses (MGs), paying special attention to the implications for our understanding of glass transition phenomena, mechanical properties, shear-banding dynamics and deformation mechanisms, diffusion …
Gamma relaxation in bulk metallic glasses
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WebOpen Access Studying the primary α- and secondary β-relaxation process has contributed significantly to the understanding of the structure and rheology of metallic glasses. In …
WebOct 1, 2024 · In general, MG would relax into the lower energy state with improved stability, and the corresponding δ in Eq. (1) becomes smaller. Δ Hrel of bulk metallic glass (BMG) with the same composition as mentioned above decreases by 22.11% ( δ) from 0.065 (Δ Hrel) to 0.051 kJ mol −1 (Δ Ht) after aging for 70 days at ambient temperature (see … WebAug 15, 2024 · Liquid-like atoms have rarely been observed in simple glasses, such as dense-packed metallic glasses (MGs). Recently, an unusual fast-relaxation process was observed in the dynamics of MGs...
WebFeb 26, 2024 · For metallic glasses, it has been generally observed that higher fictive temperatures result in higher ductility of the corresponding amorphous structure 1, 2, 3, 4, 5, 6. Realizing a higher Tf... WebJul 22, 2024 · The relaxation phenomena of metallic glasses (MGs) have attracted a great deal of attention from researchers who seek to unveil the nature of the glass transition and other key issues in...
WebThe kinetic viscosity ( η ) of superheated melts, thermal properties ( T x , T m , T L ) and X-ray diffraction analysis on the Pr-based bulk metallic glasses (BMG) are reported and discussed. A new refined concept, the superheated fragility defined as M ′ = E S δ x / k B , has been developed based on common solidification theory and the Arrhenius equation. …
WebGamma relaxation in bulk metallic glasses @article{Kuchemann2024GammaRI, title={Gamma relaxation in bulk metallic glasses}, author={Stefan Kuchemann and Robert Maa{\ss}}, journal={Scripta Materialia}, year={2024}, volume={137}, pages={5-8} } Stefan Kuchemann, R. Maaß; Published 27 March 2024; Materials Science; Scripta Materialia nags head weather mayWebWe find that γ-relaxation in the here studied bulk metallic glasses represents an irreversible structural excitation, causing a remarkable enthalpy storage that is recovered … medina tire shop willis txWebWe find that γ-relaxation in the here studied bulk metallic glasses represents an irreversible structural excitation, causing a remarkable enthalpy storage that is recovered … medinatn rent housesWebGamma relaxation in bulk metallic glasses S. Küchemann, R. Maaß⁎ Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, 1304 West Green Street, Urbana 61801, IL, USA article info abstract Article history: Received 26 March 2024 Accepted 23 April 2024 Available online xxxx nags head wollastonWebMay 1, 2024 · In the present work, a nonuniform structure consisting of a center-relaxation region surrounded by an edge-gradient-rejuvenation framework was created in a Zr-based bulk metallic glass... nags head village beach clubWebThe alloy can withstand pressure and stress of up to 12.5 GPa (123,000 atm) without undergoing any permanent deformation, this is the highest impact resistance of any bulk metallic glass ever recorded (as of 2016) … medinationsWebFigure 1: Relaxation spectrum for the bulk metallic glass Vit106a between 0.15×T g and T g. Besides the well know α- and -process, a third relaxation process occurs around 0.26×T … medina tire shop laredo texas