Discovery of a metastable Al20Sm4 phase

Ye, Z.; Zhang, F.; Sun, Y.; Mendelev, M. I.; Ott, R. T.; Park, E.; Besser, M. F.; Kramer, M. J.; Ding, Z.; Wang, C. -Z.; Ho, K. -M.

doi:10.1063/1.4914399

Title: Discovery of a metastable Al₂₀Sm₄ phase

Journal Article · Mon Mar 09 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4914399· OSTI ID:1227222

Ye, Z. ^[1]; Zhang, F. ^[1]; Sun, Y. ^[2]; Mendelev, M. I. ^[1]; Ott, R. T. ^[1];

^[1]; Besser, M. F. ^[1]; Kramer, M. J. ^[1]; Ding, Z. ^[3]; Wang, C. -Z. ^[1]; Ho, K. -M. ^[4]

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

In this study, we present an efficient genetic algorithm, integrated with experimental diffraction data, to solve a nanoscale metastable Al₂₀Sm₄ phase that evolves during crystallization of an amorphous magnetron sputtered Al₉₀Sm₁₀ alloy. The excellent match between calculated and experimental X-ray diffraction patterns confirms an accurate description of this metastable phase. Molecular dynamic simulations of crystal growth from the liquid phase predict the formation of disordered defects in the devitrified crystal.

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

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-06CH11357; AC02-07CH11358

OSTI ID:: 1227222

Alternate ID(s):: OSTI ID: 1226718

Report Number(s):: IS-J-8578; APPLAB

Journal Information:: Applied Physics Letters, Vol. 106, Issue 10; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 18 works

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References (14)

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Discovery of a meta-stable Al–Sm phase with unknown stoichiometry using a genetic algorithm Zhang, Feng; McBrearty, Ian; Ott, R. T. Scripta Materialia, Vol. 81 https://doi.org/10.1016/j.scriptamat.2014.02.019	journal	June 2014
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Cited By (5)

Experimental Determination of the Allotropic Transition Temperature Between Tetragonal and Orthorhombic Al4Sm Metastable Phases Napolitano, R. E.; Zhou, S. H.; Yang, X. Metallurgical and Materials Transactions A, Vol. 50, Issue 3 https://doi.org/10.1007/s11661-018-5064-7	journal	January 2019
Observation of η-Al41Sm5 reveals motif-aware structural evolution in Al-Sm alloys Ye, Z.; Meng, F.; Zhang, F. Scientific Reports, Vol. 9, Issue 1 https://doi.org/10.1038/s41598-019-43079-9	journal	April 2019
‘Crystal Genes’ in Metallic Liquids and Glasses Sun, Yang; Zhang, Feng; Ye, Zhuo Scientific Reports, Vol. 6, Issue 1 https://doi.org/10.1038/srep23734	journal	March 2016
A comparative study of Sm networks in Al-10 at.%Sm glass and associated crystalline phases Lv, Xiaobao; Ye, Zhuo; Sun, Yang Philosophical Magazine Letters, Vol. 98, Issue 1 https://doi.org/10.1080/09500839.2018.1447157	journal	January 2018
Structural hierarchy as a key to complex phase selection in Al-Sm Ye, Z.; Zhang, F.; Sun, Y. Physical Review Materials, Vol. 1, Issue 5 https://doi.org/10.1103/physrevmaterials.1.055601	journal	October 2017

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36 MATERIALS SCIENCE
aluminum
crystal structure
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crystal defects
Rietveld refinement

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Title: Discovery of a metastable Al₂₀Sm₄ phase