Effect of composition on the microstructure of Mg(100-x)Cux alloys during rapid solidification
YH Zhang and YC Liang and BY Yu and ZA Tian and Q Xie and TH Gao and JJ Ma and Q Chen and YF Mo, MATERIALS RESEARCH EXPRESS, 6, 115216 (2019).
A molecular dynamics simulation was performed to investigate the effect of content on the atomic structure of Mg(100-x)Cux (x = 10, 20, ... 90) alloys during solidification at a cooling rate of 1 x 10(10) K s(-1). The Mg50Cu50 alloy was split into two composition ranges by various analytic methods. When the molar fraction of Cu (C-Cu) was less than 50%, the number of S555 bond-type and topologically close-packed (TCP) structures were greater than those in the other composition ranges and clearly changed. The formation of ordered local structure would decrease the configurational entropies. This work provides insights into glass formation in alloys from a cluster-level structural perspective and is expected to shed light on the development of additional metallic glasses.
Return to Publications page