Work hardening ability of ductile Ti45Cu40Ni 7.5Zr5Sn2.5 and Cu47.5Zr 47.5Al5 bulk metallic glasses

K. B. Kim; J. Das; S. Venkataraman; S. Yi; J. Eckert

doi:10.1063/1.2337534

Work hardening ability of ductile Ti₄₅Cu₄₀Ni _7.5Zr₅Sn_2.5 and Cu_47.5Zr _47.5Al₅ bulk metallic glasses

K. B. Kim, J. Das, S. Venkataraman, S. Yi, J. Eckert

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Abstract

Ductile Ti₄₅Cu₄₀Ni_7.5Zr₅Sn _2.5 and Cu_47.5Zr_47.5Al₅ bulk metallic glasses (BMGs) present different work hardening abilities under compression. Microstructural investigations reveal that nanoscale chemical heterogeneities occur throughout the samples. The morphology of the chemically heterogeneous domains in the as-cast Ti₄₅Cu₄₀Ni _7.5Zr₅Sn_2.5 BMG is irregular and significantly interconnected. In contrast, the as-cast Cu_47.5Zr _47.5Al₅ BMG exhibits a spherical morphology of the chemically heterogeneous regions. Furthermore, the distribution of the nanoscale chemical heterogeneity is macroscopically inhomogeneous throughout the material. These findings suggest that the different work hardening abilities of the Ti₄₅Cu₄₀Ni_7.5Zr₅Sn_2.5 and Cu_47.5Zr_47.5Al₅ BMGs possibly originate from the different morphologies and distributions of the chemically heterogeneous regions.

Original language	English
Article number	071908
Journal	Applied Physics Letters
Volume	89
Issue number	7
DOIs	https://doi.org/10.1063/1.2337534
State	Published - 2006

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title = "Work hardening ability of ductile Ti45Cu40Ni 7.5Zr5Sn2.5 and Cu47.5Zr 47.5Al5 bulk metallic glasses",

abstract = "Ductile Ti45Cu40Ni7.5Zr5Sn 2.5 and Cu47.5Zr47.5Al5 bulk metallic glasses (BMGs) present different work hardening abilities under compression. Microstructural investigations reveal that nanoscale chemical heterogeneities occur throughout the samples. The morphology of the chemically heterogeneous domains in the as-cast Ti45Cu40Ni 7.5Zr5Sn2.5 BMG is irregular and significantly interconnected. In contrast, the as-cast Cu47.5Zr 47.5Al5 BMG exhibits a spherical morphology of the chemically heterogeneous regions. Furthermore, the distribution of the nanoscale chemical heterogeneity is macroscopically inhomogeneous throughout the material. These findings suggest that the different work hardening abilities of the Ti45Cu40Ni7.5Zr5Sn2.5 and Cu47.5Zr47.5Al5 BMGs possibly originate from the different morphologies and distributions of the chemically heterogeneous regions.",

author = "Kim, {K. B.} and J. Das and S. Venkataraman and S. Yi and J. Eckert",

year = "2006",

doi = "10.1063/1.2337534",

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journal = "Applied Physics Letters",

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T1 - Work hardening ability of ductile Ti45Cu40Ni 7.5Zr5Sn2.5 and Cu47.5Zr 47.5Al5 bulk metallic glasses

AU - Kim, K. B.

AU - Das, J.

AU - Venkataraman, S.

AU - Yi, S.

AU - Eckert, J.

PY - 2006

Y1 - 2006

N2 - Ductile Ti45Cu40Ni7.5Zr5Sn 2.5 and Cu47.5Zr47.5Al5 bulk metallic glasses (BMGs) present different work hardening abilities under compression. Microstructural investigations reveal that nanoscale chemical heterogeneities occur throughout the samples. The morphology of the chemically heterogeneous domains in the as-cast Ti45Cu40Ni 7.5Zr5Sn2.5 BMG is irregular and significantly interconnected. In contrast, the as-cast Cu47.5Zr 47.5Al5 BMG exhibits a spherical morphology of the chemically heterogeneous regions. Furthermore, the distribution of the nanoscale chemical heterogeneity is macroscopically inhomogeneous throughout the material. These findings suggest that the different work hardening abilities of the Ti45Cu40Ni7.5Zr5Sn2.5 and Cu47.5Zr47.5Al5 BMGs possibly originate from the different morphologies and distributions of the chemically heterogeneous regions.

AB - Ductile Ti45Cu40Ni7.5Zr5Sn 2.5 and Cu47.5Zr47.5Al5 bulk metallic glasses (BMGs) present different work hardening abilities under compression. Microstructural investigations reveal that nanoscale chemical heterogeneities occur throughout the samples. The morphology of the chemically heterogeneous domains in the as-cast Ti45Cu40Ni 7.5Zr5Sn2.5 BMG is irregular and significantly interconnected. In contrast, the as-cast Cu47.5Zr 47.5Al5 BMG exhibits a spherical morphology of the chemically heterogeneous regions. Furthermore, the distribution of the nanoscale chemical heterogeneity is macroscopically inhomogeneous throughout the material. These findings suggest that the different work hardening abilities of the Ti45Cu40Ni7.5Zr5Sn2.5 and Cu47.5Zr47.5Al5 BMGs possibly originate from the different morphologies and distributions of the chemically heterogeneous regions.

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Work hardening ability of ductile Ti₄₅Cu₄₀Ni _7.5Zr₅Sn_2.5 and Cu_47.5Zr _47.5Al₅ bulk metallic glasses

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