Influence of clusters in melt on the subsequent glass-formation and crystallization of Fe–Si–B metallic glasses

作者: Shaoxiong Zhou , Bangshao Dong , Rui Xiang , Guangqiang Zhang , Jingyu Qin

DOI: 10.1016/J.PNSC.2015.02.002

关键词: Materials scienceAb initio molecular dynamicsCluster (physics)Phase (matter)Amorphous solidAb initioCrystallographyAlloyAmorphous metalChemical physicsCrystallization

摘要: Abstract The liquid structure of seven representative Fe–Si–B alloys has been investigated by ab initio molecular dynamics simulation focusing on the role clusters in terms glass-forming ability (GFA) and crystallization. It is demonstrated that type primary phase precipitated from amorphous state under heat treatment determined relative fraction various melt. alloy melt shows higher stability resultantly larger GFA when there no dominant cluster or several coexist, which explains different GFAs crystallization processes at ratios Si B system. close correlation among clusters, crystalline also studied.

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