The 尾-relaxation in metallic glasses
Web15 Feb 2012 · Metallic glasses quenched from fragile liquids show pronounced β relaxation humps whereas unobvious excess wings are associated with the metallic glasses … Web6 Jan 2012 · Metallic glasses are commonly brittle, as they generally fail catastrophically under uniaxial tension. Here we show pronounced macroscopic tensile plasticity achieved …
The 尾-relaxation in metallic glasses
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Web28 Aug 2014 · The β-relaxation of metallic glasses (MGs) bears nontrivial connections to their microscopic and macroscopic properties. In an effort to elucidate the mechanism of … WebBothe, K., & Neuhäuser, H. (1982). Study of structural relaxation in metallic glasses by modulus measurements. Scripta Metallurgica, 16(9), 1053–1057. doi:10.1016 ...
Web17 Nov 2024 · The Johari-Goldstein β relaxations are intrinsic to almost all glassy materials (10, 11), and they are of significance to the understanding of many crucial unresolved issues in glassy physics and material sciences (11, 13).These include liquid dynamics and anomalies (10, 14), diffusion (), physical aging (), mechanical properties of polymeric and … WebAfter that, a scanning ultrafast nanoindentation technique is used to map out the structure heterogeneity in a Zr-based bulk metallic glass (BMG). With these ongoing research efforts, we hope that more research work could be stimulated in the pursuit of the structure-property relation in MGs.
Web1 Jul 2024 · As a result of structural heterogeneity, the microscopic structural always tends to relax to lower potential energy configurations, which has been seen in the phenomenon … Web29 Jun 2024 · Above the glass transition temperature in metallic glasses, there is a two-step decoupling of relaxation processes: a fast (β) process resembles the rattling and subsequent escape of particles in the cages formed by their nearest neighbors, and a slower (α) process associated with long-range translational motion.
WebThe relaxation times for the mechanical relaxation of the glasses were 10 −4 –10 −2 s at the glass transition. The thermal conductivity, thermal diffusivity, and heat capacity of glasses have been determined simultaneously during the annealing or stabilization process below the glass transition using a hot-wire method. The relaxation time ...
WebCombining simulation and experimental data with our theoretical approach, we reveal that the large mass asymmetry between the elements in a La 60 Ni 15 Al 25 MG leads to a clear separation in the respective relaxation timescales, giving strong evidence that JG relaxation is controlled by the lightest atomic species present. cost benefit of telemedicineWeb1 May 2013 · Metallic glasses exist in a non-equilibrium state, and the slow relaxation toward equilibrium is commonly referred to as physical aging [89]. It is accompanied by … breakdown concept crossword clueWebAccording to Ref. [34], glass transition can be viewed as a percolation process in which the slowly relaxing atoms, which corresponds to a large viscosity and a long relaxation time tL, percolate to form the ‘skeleton’ of the glass whilst the rapidly relaxing atoms, which corresponds to a low viscosity and a short relaxation time ts (<< tL ), are … cost-benefit ratio exampleWeb3 Apr 2024 · Welcome to the official magazine of Charlotte Travel. This issue explores the stunning French Polynesian islands of Tahiti. Known for their clear t... cost-benefit-risk analysisWeb15 Aug 2024 · By systematically investigating the relaxation behavior of a model metallic glass based on the extensive molecular dynamics (MD) simulations combined with the … cost benefit of electric carWeb20 Feb 2024 · By comparison, metallic glasses have a simple atomic structure with dense atomic packing, and their relaxation spectra were commonly found to be simpler than … breakdown compositionWeb14 Sep 2014 · Focusing on metallic glasses as model systems, we review the features and mechanisms of the β-relaxations, which are intrinsic and universal to supercooled liquids … cost benefit of solar panels texas