Tailoring of in situ Ti-based bulk glassy matrix composites with high mechanical performance

J. M. Park; J. Jayaraj; D. H. Kim; N. Mattern; G. Wang; J. Eckert

doi:10.1016/j.intermet.2010.02.029

Tailoring of in situ Ti-based bulk glassy matrix composites with high mechanical performance

J. M. Park, J. Jayaraj, D. H. Kim, N. Mattern, G. Wang, J. Eckert

Department of Materials Science and Engineering

Research output: Contribution to journal › Article

19 Citations (Scopus)

Abstract

In this study, we developed ductile dendrite-reinforced composites in the Ti-Zr-Ni-Cu-Be-(Nb) system. Although in situ composites have been successfully obtained by optimizing alloy composition and cooling rate, plasticity does not always occur. Only when the size, distribution, and elastic constants of the constituent phases are properly controlled, i.e. by creating homogeneously distributed dendrites with lower shear modulus than the glassy matrix, the composites exhibit large plasticity. By controlling the microstructural length scale and by tuning the intrinsic elastic constants of the constituent phases Ti-based bulk glassy matrix composites with good mechanical performance (high yield strength of ∼1.7 GPa and large plasticity of ∼25%) have been achieved.

Original language	English
Pages (from-to)	1908-1911
Number of pages	4
Journal	Intermetallics
Volume	18
Issue number	10
DOIs	https://doi.org/10.1016/j.intermet.2010.02.029
Publication status	Published - 2010 Oct

Bibliographical note

Funding Information:
This work was supported by the Global Research Laboratory Program of the Korea Ministry of Education, Science and Technology. Stimulating discussions with E. Fleury, G. Liu, K.B. Kim and R. Li are gratefully acknowledged.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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title = "Tailoring of in situ Ti-based bulk glassy matrix composites with high mechanical performance",

abstract = "In this study, we developed ductile dendrite-reinforced composites in the Ti-Zr-Ni-Cu-Be-(Nb) system. Although in situ composites have been successfully obtained by optimizing alloy composition and cooling rate, plasticity does not always occur. Only when the size, distribution, and elastic constants of the constituent phases are properly controlled, i.e. by creating homogeneously distributed dendrites with lower shear modulus than the glassy matrix, the composites exhibit large plasticity. By controlling the microstructural length scale and by tuning the intrinsic elastic constants of the constituent phases Ti-based bulk glassy matrix composites with good mechanical performance (high yield strength of ∼1.7 GPa and large plasticity of ∼25%) have been achieved.",

author = "Park, {J. M.} and J. Jayaraj and Kim, {D. H.} and N. Mattern and G. Wang and J. Eckert",

note = "Funding Information: This work was supported by the Global Research Laboratory Program of the Korea Ministry of Education, Science and Technology. Stimulating discussions with E. Fleury, G. Liu, K.B. Kim and R. Li are gratefully acknowledged.",

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AU - Park, J. M.

AU - Jayaraj, J.

AU - Kim, D. H.

AU - Mattern, N.

AU - Wang, G.

AU - Eckert, J.

N1 - Funding Information: This work was supported by the Global Research Laboratory Program of the Korea Ministry of Education, Science and Technology. Stimulating discussions with E. Fleury, G. Liu, K.B. Kim and R. Li are gratefully acknowledged.

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AB - In this study, we developed ductile dendrite-reinforced composites in the Ti-Zr-Ni-Cu-Be-(Nb) system. Although in situ composites have been successfully obtained by optimizing alloy composition and cooling rate, plasticity does not always occur. Only when the size, distribution, and elastic constants of the constituent phases are properly controlled, i.e. by creating homogeneously distributed dendrites with lower shear modulus than the glassy matrix, the composites exhibit large plasticity. By controlling the microstructural length scale and by tuning the intrinsic elastic constants of the constituent phases Ti-based bulk glassy matrix composites with good mechanical performance (high yield strength of ∼1.7 GPa and large plasticity of ∼25%) have been achieved.

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