Multistage devitrification behavior of Mg65Cu25 Tb10 bulk metallic glass

L. Yang; X. L. Wang; A. D. Stoica; J. Almer; D. Shi; W. H. Wang

doi:10.1007/s11661-007-9415-z

Multistage devitrification behavior of Mg₆₅Cu₂₅ Tb₁₀ bulk metallic glass

L. Yang, X. L. Wang, A. D. Stoica, J. Almer, D. Shi, W. H. Wang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

6 Citations (Scopus)

Abstract

The devitrification of Mg₆₅Cu₂₅Tb₁₀ bulk metallic glass (BMG) has been studied by time-resolved small angle X-ray scattering (SAXS) and wide angle X-ray scattering (WAXS) simultaneously. By analyzing the interference peaks on SAXS patterns and the Bragg peaks on WAXS patterns, it is found that devitrification initiates by activation of quenched-in short-range orders. Crystallization proceeds in three stages. During stage I, icosahedral clusters are formed that transforms to a quasi-crystalline 1/1 approximant during stage II, accompanied by the formation of cubic TbMg₃. In stage III, the 1/1 approximant transforms to a 2/1 approximant. The orthorhombic CuMg₂ phase is formed at a higher temperature when the quasi-crystalline phase starts to decompose. Pair distribution functions were evaluated to demonstrate these structural evolutions in real space. © The Minerals, Metals & Materials Society and ASM International 2008.

Original language	English
Pages (from-to)	1947-1952
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	39
Issue number	8
DOIs	https://doi.org/10.1007/s11661-007-9415-z
Publication status	Published - Aug 2008
Externally published	Yes

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@article{c6fb6e85bee048f08f0f9a9b29cab17d,

title = "Multistage devitrification behavior of Mg65Cu25 Tb10 bulk metallic glass",

abstract = "The devitrification of Mg65Cu25Tb10 bulk metallic glass (BMG) has been studied by time-resolved small angle X-ray scattering (SAXS) and wide angle X-ray scattering (WAXS) simultaneously. By analyzing the interference peaks on SAXS patterns and the Bragg peaks on WAXS patterns, it is found that devitrification initiates by activation of quenched-in short-range orders. Crystallization proceeds in three stages. During stage I, icosahedral clusters are formed that transforms to a quasi-crystalline 1/1 approximant during stage II, accompanied by the formation of cubic TbMg3. In stage III, the 1/1 approximant transforms to a 2/1 approximant. The orthorhombic CuMg2 phase is formed at a higher temperature when the quasi-crystalline phase starts to decompose. Pair distribution functions were evaluated to demonstrate these structural evolutions in real space. {\textcopyright} The Minerals, Metals & Materials Society and ASM International 2008.",

author = "L. Yang and Wang, {X. L.} and Stoica, {A. D.} and J. Almer and D. Shi and Wang, {W. H.}",

year = "2008",

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doi = "10.1007/s11661-007-9415-z",

language = "English",

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TY - JOUR

T1 - Multistage devitrification behavior of Mg65Cu25 Tb10 bulk metallic glass

AU - Yang, L.

AU - Wang, X. L.

AU - Stoica, A. D.

AU - Almer, J.

AU - Shi, D.

AU - Wang, W. H.

PY - 2008/8

Y1 - 2008/8

N2 - The devitrification of Mg65Cu25Tb10 bulk metallic glass (BMG) has been studied by time-resolved small angle X-ray scattering (SAXS) and wide angle X-ray scattering (WAXS) simultaneously. By analyzing the interference peaks on SAXS patterns and the Bragg peaks on WAXS patterns, it is found that devitrification initiates by activation of quenched-in short-range orders. Crystallization proceeds in three stages. During stage I, icosahedral clusters are formed that transforms to a quasi-crystalline 1/1 approximant during stage II, accompanied by the formation of cubic TbMg3. In stage III, the 1/1 approximant transforms to a 2/1 approximant. The orthorhombic CuMg2 phase is formed at a higher temperature when the quasi-crystalline phase starts to decompose. Pair distribution functions were evaluated to demonstrate these structural evolutions in real space. © The Minerals, Metals & Materials Society and ASM International 2008.

AB - The devitrification of Mg65Cu25Tb10 bulk metallic glass (BMG) has been studied by time-resolved small angle X-ray scattering (SAXS) and wide angle X-ray scattering (WAXS) simultaneously. By analyzing the interference peaks on SAXS patterns and the Bragg peaks on WAXS patterns, it is found that devitrification initiates by activation of quenched-in short-range orders. Crystallization proceeds in three stages. During stage I, icosahedral clusters are formed that transforms to a quasi-crystalline 1/1 approximant during stage II, accompanied by the formation of cubic TbMg3. In stage III, the 1/1 approximant transforms to a 2/1 approximant. The orthorhombic CuMg2 phase is formed at a higher temperature when the quasi-crystalline phase starts to decompose. Pair distribution functions were evaluated to demonstrate these structural evolutions in real space. © The Minerals, Metals & Materials Society and ASM International 2008.

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U2 - 10.1007/s11661-007-9415-z

DO - 10.1007/s11661-007-9415-z

M3 - RGC 21 - Publication in refereed journal

SN - 1073-5623

VL - 39

SP - 1947

EP - 1952

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

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ER -