A new criterion for glass-forming ability based on both devitrification and solidification processes

Autor: Ji Wang, Yingdan Liu, Frédéric Affouard, Zijing Li, Li-Min Wang, Suhong Zhang, Shidong Feng, Shaopeng Pan
Přispěvatelé: Yanshan University [Qinhuangdao], Taiyuan University of Technology, Unité Matériaux et Transformations - UMR 8207 (UMET), Institut de Chimie du CNRS (INC)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Ecole Nationale Supérieure de Chimie de Lille (ENSCL), Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Intermetallics
Intermetallics, Elsevier, 2021, Intermetallics, 136, pp.107264. ⟨10.1016/j.intermet.2021.107264⟩
Intermetallics, 2021, Intermetallics, 136, pp.107264. ⟨10.1016/j.intermet.2021.107264⟩
ISSN: 0966-9795
DOI: 10.1016/j.intermet.2021.107264⟩
Popis: International audience; Based on the time-temperature-transformation interpretation, a new criterion for glass forming ability, Z = [(Tx-Tg)/(Tl-Tg)][(Tl–Tl(c))/(Tl-Tg)]0.556, is proposed, where Tg, Tx, Tl and Tl(c) respectively denote the glass transition temperature, the onset crystallization temperature upon heating, the liquidus temperature and the onset solidification temperature of the liquid upon cooling. The Z parameter jointly considers the stability of the liquid and the devitrification of glassy phases. A non-linear relationship between the parameter Z and the critical glassy size dc has been found to be log (dc)cal = 0.1392 + 17.0616Z - 41.985(Z)2, showing stronger correlation than other earlier reported parameters. The advantage of using Z as a GFA parameter is that it roughly reflects the relative influences of the thermodynamics and kinetics of the systems on glass formation. In addition, the parameter describes the stability of liquid in the course of being quenched from above liquidus temperature.
Databáze: OpenAIRE