Fluctuations of the local atomic environment with chemical alloying in Fe bulk metallic glasses

P. Tong; Despina Louca; X. J. Gu; S. J. Poon; G. J. Shiflet; T. Proffen

doi:10.1007/s11661-011-0695-y

Fluctuations of the local atomic environment with chemical alloying in Fe bulk metallic glasses

P. Tong
, Despina Louca
, X. J. Gu
, S. J. Poon
, G. J. Shiflet
, T. Proffen

Research output: Contribution to journal › Article › peer-review

Abstract

Fluctuations in the microstructure with chemical alloying of Fe multicomponent bulk metallic glasses were characterized via the pair density function analysis of neutron diffraction data. In the two systems investigated, (Fe/Mo)₇₆P₁₂C₁₀B₂ and Fe ₄₉Cr₁₅Mo₁₄Er₁(C/B)₂₁, it is shown that the atomic topology is sensitive to even small chemical fluctuations. In phosphorous containing glasses, (Fe/Mo)₇₆P ₁₂C₁₀B₂, increasing the atomic percent of Mo brings about changes of the microstructure, particularly in the short-range environment involving Mo-C/B and Fe-P pair correlations. In Fe ₄₉Cr₁₅Mo₁₄Er₁(C/B)₂₁, the systematic increase of B results in a shift of the center of mass of the first coordination shell and an increase in the coordination of the second shell, reflecting a local rearrangement brought upon the substitution of B for C.

Original language	English
Pages (from-to)	1481-1485
Number of pages	5
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	42
Issue number	6
DOIs	https://doi.org/10.1007/s11661-011-0695-y
State	Published - Jun 2011
Externally published	Yes

Funding

Work at the University of Virginia is supported by the National Science Foundation (Grant No. 130398GA10715). This work has benefited from the use of NPDF at the Lujan Center at Los Alamos Neutron Science Center, funded by the DOE Office of Basic Energy Sciences. Los Alamos National Laboratory is operated by Los Alamos National Security LLC under DOE Contract No. DE-AC52-06NA25396.

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10.1007/s11661-011-0695-y

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title = "Fluctuations of the local atomic environment with chemical alloying in Fe bulk metallic glasses",

abstract = "Fluctuations in the microstructure with chemical alloying of Fe multicomponent bulk metallic glasses were characterized via the pair density function analysis of neutron diffraction data. In the two systems investigated, (Fe/Mo)76P12C10B2 and Fe 49Cr15Mo14Er1(C/B)21, it is shown that the atomic topology is sensitive to even small chemical fluctuations. In phosphorous containing glasses, (Fe/Mo)76P 12C10B2, increasing the atomic percent of Mo brings about changes of the microstructure, particularly in the short-range environment involving Mo-C/B and Fe-P pair correlations. In Fe 49Cr15Mo14Er1(C/B)21, the systematic increase of B results in a shift of the center of mass of the first coordination shell and an increase in the coordination of the second shell, reflecting a local rearrangement brought upon the substitution of B for C.",

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AU - Tong, P.

AU - Louca, Despina

AU - Gu, X. J.

AU - Poon, S. J.

AU - Shiflet, G. J.

AU - Proffen, T.

PY - 2011/6

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AB - Fluctuations in the microstructure with chemical alloying of Fe multicomponent bulk metallic glasses were characterized via the pair density function analysis of neutron diffraction data. In the two systems investigated, (Fe/Mo)76P12C10B2 and Fe 49Cr15Mo14Er1(C/B)21, it is shown that the atomic topology is sensitive to even small chemical fluctuations. In phosphorous containing glasses, (Fe/Mo)76P 12C10B2, increasing the atomic percent of Mo brings about changes of the microstructure, particularly in the short-range environment involving Mo-C/B and Fe-P pair correlations. In Fe 49Cr15Mo14Er1(C/B)21, the systematic increase of B results in a shift of the center of mass of the first coordination shell and an increase in the coordination of the second shell, reflecting a local rearrangement brought upon the substitution of B for C.

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Fluctuations of the local atomic environment with chemical alloying in Fe bulk metallic glasses

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