A comparative study of Sm networks in Al-10 at.%Sm glass and associated crystalline phases

Lv, Xiaobao; Ye, Zhuo; Sun, Yang; Zhang, Feng; Yang, Lin; Lin, Zijing; Wang, Cai -Zhuang; Ho, Kai -Ming

doi:10.1080/09500839.2018.1447157

A comparative study of Sm networks in Al-10 at.%Sm glass and associated crystalline phases

Journal Article · Tue Apr 03 00:00:00 EDT 2018 · Philosophical Magazine Letters

DOI:https://doi.org/10.1080/09500839.2018.1447157· OSTI ID:1434309

^[1]; Ye, Zhuo ^[2]; ^[2]; Zhang, Feng ^[2]; ^[3]; Lin, Zijing ^[4]; Wang, Cai -Zhuang ^[2]; Ho, Kai -Ming ^[5]

Univ. of Science and Technology of China, Hefei (China); Ames Lab., Ames, IA (United States)
Ames Lab., Ames, IA (United States)
Ames Lab. and Iowa State Univ., Ames, IA (United States)
Univ. of Science and Technology of China, Hefei (China)
Ames Lab. and Iowa State Univ., Ames, IA (United States); Univ. of Science and Technology of China, Anhui (China)

Here, the Al–Sm system is selected as a model system to study the transition process from liquid and amorphous to crystalline states. In recent work, we have shown that, in addition to long-range translational periodicity, crystal structures display well-defined short-range local atomic packing motifs that transcends liquid, amorphous and crystalline states. In this paper, we investigate the longer range spatial packing of these short-range motifs by studying the interconnections of Sm–Sm networks in different amorphous and crystalline samples obtained from molecular dynamics simulations. In our analysis, we concentrate on Sm–Sm distances in the range ~5.0–7.2 Å, corresponding to Sm atoms in the second and third shells of Sm-centred clusters. We discover a number of empirical rules characterising the evolution of Sm networks from the liquid and amorphous states to associated metastable crystalline phases experimentally observed in the initial stages of devitrification of different amorphous samples. As direct simulation of glass formation is difficult because of the vast difference between experimental quench rates and what is achievable on the computer, we hope these rules will be helpful in building a better picture of structural evolution during glass formation as well as a more detailed description of phase selection and growth during devitrification.

View Accepted Manuscript (DOE)

Research Organization:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-07CH11358

OSTI ID:: 1434309

Report Number(s):: IS-J--9614

Journal Information:: Philosophical Magazine Letters, Journal Name: Philosophical Magazine Letters Journal Issue: 1 Vol. 98; ISSN 0950-0839

Publisher:: Taylor & FrancisCopyright Statement

Country of Publication:: United States

Language:: English

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A comparative study of Sm networks in Al-10 at.%Sm glass and associated crystalline phases

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References (26)

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