About this Research Topic
Complex alloys, including both structurally disordered metallic glasses and chemically disordered high entropy alloys, have received considerable attention because they provide a broad range of opportunities for property control, and have found applications in structural materials, damage resistance, and other functionalities such as catalysis, magnetism, and electronics. However, a fundamental and predictive understanding of the physical and mechanical properties of these complex materials is still lacking mainly due to the following two obstacles: First, their atomic-level disordered features have posed grand challenges in building robust structure-property relationships; In addition, as an inherently non-equilibrium state of matters their properties are dynamically evolving, which urges one to go beyond the thermodynamics-dominated consideration and instead calls for the need of an equally important kinetic description, which yet remains to be established.
This Research Topic aims to advance in the fundamental understanding of physical and mechanical behaviors in materials with significant local disorders in terms of both structures and chemistries. More specifically, the Research Topic seeks to promote the development of new concepts and methodologies for describing glassy materials, glass-forming supercooled liquids, and high entropy alloys with different processing histories and at various external stimuli conditions. The roles of short to medium-range order, structural and property heterogeneities, aging/rejuvenation phenomena, deformation mechanisms, memory effects, and complex driving conditions will be of particular focus. Modeling studies, as well as their integration with experiments, are encouraged.
The topics of interest include, but are not limited to, the following:
• Short- to medium-range orders in topology and chemistry, structure-property relationship for metallic glasses, high entropy alloys, and quasi-crystals
• Mechanical behaviors and deformation mechanisms, including viscoplasticity, elasticity, shear banding, fracture toughness, structural heterogeneity, nano-twinning, stacking fault, strain hardening, shear softening, etc
• Modeling algorithms, including machine learning, Calphad and thermodynamics calculations, mesoscale modeling, atomistic simulation, first-principles methods, energy landscape sampling, etc
• Physical behaviors, including glass formability, aging/rejuvenation, memory effect, diffusivity, point-defects behaviors
• Non-equilibrium dynamics under complex driving conditions (e.g. high pressure, torsion, irradiation, etc)
This Research Topic aims to advance in the fundamental understanding of physical and mechanical behaviors in materials with significant local disorders in terms of both structures and chemistries. More specifically, the Research Topic seeks to promote the development of new concepts and methodologies for describing glassy materials, glass-forming supercooled liquids, and high entropy alloys with different processing histories and at various external stimuli conditions. The roles of short to medium-range order, structural and property heterogeneities, aging/rejuvenation phenomena, deformation mechanisms, memory effects, and complex driving conditions will be of particular focus. Modeling studies, as well as their integration with experiments, are encouraged.
The topics of interest include, but are not limited to, the following:
• Short- to medium-range orders in topology and chemistry, structure-property relationship for metallic glasses, high entropy alloys, and quasi-crystals
• Mechanical behaviors and deformation mechanisms, including viscoplasticity, elasticity, shear banding, fracture toughness, structural heterogeneity, nano-twinning, stacking fault, strain hardening, shear softening, etc
• Modeling algorithms, including machine learning, Calphad and thermodynamics calculations, mesoscale modeling, atomistic simulation, first-principles methods, energy landscape sampling, etc
• Physical behaviors, including glass formability, aging/rejuvenation, memory effect, diffusivity, point-defects behaviors
• Non-equilibrium dynamics under complex driving conditions (e.g. high pressure, torsion, irradiation, etc)
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.
