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Showing 1–4 of 4 results
Advanced filters: Author: Jiri Orava Clear advanced filters

  • The competition between the formation of different phases and their kinetics need to be clearly understood to make materials with on-demand and multifaceted properties. Here, the authors reveal, by a combination of complementary in situ techniques, the mechanism of a Cu-Zr-Al metallic glass’s high propensity for metastable phase formation, which is partially through a kinetic mechanism of Al partitioning.

    • Jiri Orava
    • Shanoob Balachandran
    • Ivan Kaban
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-13

  • Cryothermal cycling can induce rejuvenation as well as relaxation of metallic glasses. The surface apparent Young’s modulus and its spatial distribution width increase after the treatment, while in bulk effect depends on the glass composition. This increase is temporary and disappears after some time of room temperature aging. Effect is connected with a large distribution of relaxation times in metallic glasses due to their heterogeneous structure and the formation of complex native oxide on the glass surface. Cryothermal cycling can improve or degrade the plasticity of metallic glasses and the atomic bond structure determines the outcome of the treatment.

    • Sergey V. Ketov
    • Artem S. Trifonov
    • Alan Lindsay Greer
    ResearchOpen Access
    NPG Asia Materials
    Volume: 10, P: 137-145

  • A new principle for management of dopant–dopant and dopant–host interactions by manipulation of mesoscale heterogeneity in a single active material is presented. The proposed mesoscale engineering approach results in dramatically inhomogeneous broadening of dopant, and for the first time show success in simultaneously extending emission bandwidth and flattening spectral shape in a doped glass and fiber.

    • Yongze Yu
    • Zaijin Fang
    • Jianrong Qiu
    ResearchOpen Access
    NPG Asia Materials
    Volume: 8, P: e318