Atomic-scale relaxation dynamics and aging in a metallic glass probed by x-ray photon correlation spectroscopy.
Beatrice Ruta,Yuriy Chushkin,Giulio Monaco,Luca Cipelletti,Luca Cipelletti,Eloi Pineda,Pere Bruna,Valentina M. Giordano,M. Gonzalez-Silveira +8 more
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In this article, the structural relaxation process in a metallic glass on the atomic length scale was investigated using x-ray photon correlation spectroscopy, and the authors found evidence for a crossover between the supercooled liquid phase and the metastable glassy state, suggesting different origins of the relaxation process across the transition.Abstract:
We use x-ray photon correlation spectroscopy to investigate the structural relaxation process in a metallic glass on the atomic length scale. We report evidence for a dynamical crossover between the supercooled liquid phase and the metastable glassy state, suggesting different origins of the relaxation process across the transition. Furthermore, using different cooling rates, we observe a complex hierarchy of dynamic processes characterized by distinct aging regimes. Strong analogies with the aging dynamics of soft glassy materials, such as gels and concentrated colloidal suspensions, point at stress relaxation as a universal mechanism driving the relaxation dynamics of out-of-equilibrium systems.read more
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Structural heterogeneities and mechanical behavior of amorphous alloys
J.C. Qiao,J.C. Qiao,J.C. Qiao,Q. Wang,Jean-Marc Pelletier,Hidemi Kato,Riccardo Casalini,Daniel Crespo,Eloi Pineda,Yao Yao,Yong Yang +10 more
TL;DR: In this paper, the authors review the recent advances on the understanding of structural heterogeneities in metallic supercooled liquids and the influence of the structural heterogeneity on the overall mechanical properties of the corresponding amorphous alloys.
Journal ArticleDOI
Dynamic relaxations and relaxation-property relationships in metallic glasses
Weihua Wang,Weihua Wang +1 more
TL;DR: A review of the state of the art of dynamic relaxation in metallic glassy system, as well as a comparison with other glassy systems, is presented in this paper, where the correlation between dynamic relaxation and various properties of MGs are established and summarized.
Journal ArticleDOI
Deformation and flow of amorphous solids: Insights from elastoplastic models
TL;DR: In this article, the authors review the physical insight provided by elastoplastic models into practical issues such as strain localization, creep and steady-state rheology, but also the fundamental questions that they address with respect to criticality at the yielding point and the statistics of avalanches of plastic events.
Journal ArticleDOI
Dynamic Mechanical Relaxation in Bulk Metallic Glasses: A Review
TL;DR: In this article, the main and secondary relaxations of metallic glasses are analyzed and the correlation between the atomic mobility and the thermo-mechanical treatments in metallic glasses is analyzed.
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Physical aging in polymers and polymer nanocomposites: recent results and open questions
Daniele Cangialosi,Virginie M. Boucher,Angel Alegría,Angel Alegría,Juan Colmenero,Juan Colmenero,Juan Colmenero +6 more
TL;DR: In this article, a critical review of the latest hot debated themes in the field of physical aging in polymers and polymer nanocomposites is provided, highlighting its relationship with the polymer segmental mobility.
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Physical aging in amorphous polymers and other materials
TL;DR: The aging of polymeric materials and the alteration of corresponding physical properties are described in this paper, where the aging process is described in terms of the physical properties of the polymeric material.