[Download]Name: Cheng Q , Han X , Kaban I , et al. Phase transformations in a Cu-Zr-Al metallic glass[J]. Scripta Materialia, 2020, 183:61.

Class: 2020

Content:
A combination of conventional calorimetry, ultra-fast scanning calorimetry and resistive heating gives access to heating rates exceeding 6 orders of magnitude allowing to probe crystallization kinetics and mechanisms in a Cu-Zr-Al metallic glass. Continuous-heating-transformation and double-peak time-temperature-transformation diagrams are constructed and related to the formation of glass–crystal composites with enhanced ductility. The metastable B2-CuZr phase becomes dominantly formed at a heating rate of ~10 2 K s −1 and higher. A critical heating rate to bypass crystallization is ~10,0 0 0 K s −1 . For isothermal annealing at > 850 K, only one crystallization event is detected; for lower temperatures, a complex two-step transformation occurs