Prominent plasticity of Mg-based bulk metallic glass composites by ex-situ spherical Ti particles

J. S.C. Jang; J. B. Li; S. L. Lee; Y. S. Chang; S. R. Jian; J. C. Huang; T. G. Nieh

doi:10.1016/j.intermet.2012.03.038

Prominent plasticity of Mg-based bulk metallic glass composites by ex-situ spherical Ti particles

J. S.C. Jang, J. B. Li, S. L. Lee, Y. S. Chang, S. R. Jian, J. C. Huang, T. G. Nieh

Graduate Institute of Materials Science and Engineering

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

30 Scopus citations

Abstract

Mg ₅₈Cu _28.5Gd ₁₁Ag _2.5 bulk metallic glass composites (BMGCs) dispersion strengthened by spherical Ti particles with different volume fractions and particle sizes were synthesized by injection casting and characterized. The presence of spherical Ti particles could highly absorb the energy of shear banding and branch the primary shear band into multiple shear bands, thus decrease the stress concentration for further propagation of shear band and so as to significantly enhance plasticity. In addition, owing to the good bonding of interface between Ti particle and amorphous matrix, the yield strength can be kept at 800 MPa as increasing the addition of Ti particles to 40 vol.%. Additionally, It was found for a given volume fraction of Ti particles, smaller particles would lead to shorter interparticle spacings, smaller confinement zone sizes than the larger particles, and consequently improve the compression plasticity from 12% plastic strain (for the BMGC with V _f = 40% and particle size (D) = 89 ± 20 μm) up to 25% strain (for the BMGC with V _f = 40% and D = 50 ± 17 μm).Also, for a given Ti particle size, higher volume fraction would lead to larger compression plasticity. The interparticle spacing as well as the confinement zone size appears to be an effective factor in affecting the plasticity of BMGCs.

Original language	English
Pages (from-to)	25-29
Number of pages	5
Journal	Intermetallics
Volume	30
DOIs	https://doi.org/10.1016/j.intermet.2012.03.038
State	Published - Nov 2012

Keywords

A. Composites
B. Dispersion strengthening
B. Mechanical properties at ambienttemperature
B. Metallic glasses
C. Casting

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10.1016/j.intermet.2012.03.038

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@article{9da836a074d84b1096ac1d912e174401,

title = "Prominent plasticity of Mg-based bulk metallic glass composites by ex-situ spherical Ti particles",

abstract = "Mg 58Cu 28.5Gd 11Ag 2.5 bulk metallic glass composites (BMGCs) dispersion strengthened by spherical Ti particles with different volume fractions and particle sizes were synthesized by injection casting and characterized. The presence of spherical Ti particles could highly absorb the energy of shear banding and branch the primary shear band into multiple shear bands, thus decrease the stress concentration for further propagation of shear band and so as to significantly enhance plasticity. In addition, owing to the good bonding of interface between Ti particle and amorphous matrix, the yield strength can be kept at 800 MPa as increasing the addition of Ti particles to 40 vol.%. Additionally, It was found for a given volume fraction of Ti particles, smaller particles would lead to shorter interparticle spacings, smaller confinement zone sizes than the larger particles, and consequently improve the compression plasticity from 12% plastic strain (for the BMGC with V f = 40% and particle size (D) = 89 ± 20 μm) up to 25% strain (for the BMGC with V f = 40% and D = 50 ± 17 μm).Also, for a given Ti particle size, higher volume fraction would lead to larger compression plasticity. The interparticle spacing as well as the confinement zone size appears to be an effective factor in affecting the plasticity of BMGCs.",

keywords = "A. Composites, B. Dispersion strengthening, B. Mechanical properties at ambienttemperature, B. Metallic glasses, C. Casting",

author = "Jang, {J. S.C.} and Li, {J. B.} and Lee, {S. L.} and Chang, {Y. S.} and Jian, {S. R.} and Huang, {J. C.} and Nieh, {T. G.}",

note = "Funding Information: It is gratefully to acknowledge the sponsorship by National Science Council of Taiwan , ROC, under the Project No. NSC98-2221-E-008-116- MY3 and NSC99-3113-P-008-003 . In addition, the authors also like to acknowledge the help on SEM and TEM analysis by the Micro and Nano Analysis Laboratory of I-Shou University.",

year = "2012",

month = nov,

doi = "10.1016/j.intermet.2012.03.038",

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volume = "30",

pages = "25--29",

journal = "Intermetallics",

issn = "0966-9795",

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TY - JOUR

T1 - Prominent plasticity of Mg-based bulk metallic glass composites by ex-situ spherical Ti particles

AU - Jang, J. S.C.

AU - Li, J. B.

AU - Lee, S. L.

AU - Chang, Y. S.

AU - Jian, S. R.

AU - Huang, J. C.

AU - Nieh, T. G.

N1 - Funding Information: It is gratefully to acknowledge the sponsorship by National Science Council of Taiwan , ROC, under the Project No. NSC98-2221-E-008-116- MY3 and NSC99-3113-P-008-003 . In addition, the authors also like to acknowledge the help on SEM and TEM analysis by the Micro and Nano Analysis Laboratory of I-Shou University.

PY - 2012/11

Y1 - 2012/11

N2 - Mg 58Cu 28.5Gd 11Ag 2.5 bulk metallic glass composites (BMGCs) dispersion strengthened by spherical Ti particles with different volume fractions and particle sizes were synthesized by injection casting and characterized. The presence of spherical Ti particles could highly absorb the energy of shear banding and branch the primary shear band into multiple shear bands, thus decrease the stress concentration for further propagation of shear band and so as to significantly enhance plasticity. In addition, owing to the good bonding of interface between Ti particle and amorphous matrix, the yield strength can be kept at 800 MPa as increasing the addition of Ti particles to 40 vol.%. Additionally, It was found for a given volume fraction of Ti particles, smaller particles would lead to shorter interparticle spacings, smaller confinement zone sizes than the larger particles, and consequently improve the compression plasticity from 12% plastic strain (for the BMGC with V f = 40% and particle size (D) = 89 ± 20 μm) up to 25% strain (for the BMGC with V f = 40% and D = 50 ± 17 μm).Also, for a given Ti particle size, higher volume fraction would lead to larger compression plasticity. The interparticle spacing as well as the confinement zone size appears to be an effective factor in affecting the plasticity of BMGCs.

AB - Mg 58Cu 28.5Gd 11Ag 2.5 bulk metallic glass composites (BMGCs) dispersion strengthened by spherical Ti particles with different volume fractions and particle sizes were synthesized by injection casting and characterized. The presence of spherical Ti particles could highly absorb the energy of shear banding and branch the primary shear band into multiple shear bands, thus decrease the stress concentration for further propagation of shear band and so as to significantly enhance plasticity. In addition, owing to the good bonding of interface between Ti particle and amorphous matrix, the yield strength can be kept at 800 MPa as increasing the addition of Ti particles to 40 vol.%. Additionally, It was found for a given volume fraction of Ti particles, smaller particles would lead to shorter interparticle spacings, smaller confinement zone sizes than the larger particles, and consequently improve the compression plasticity from 12% plastic strain (for the BMGC with V f = 40% and particle size (D) = 89 ± 20 μm) up to 25% strain (for the BMGC with V f = 40% and D = 50 ± 17 μm).Also, for a given Ti particle size, higher volume fraction would lead to larger compression plasticity. The interparticle spacing as well as the confinement zone size appears to be an effective factor in affecting the plasticity of BMGCs.

KW - A. Composites

KW - B. Dispersion strengthening

KW - B. Mechanical properties at ambienttemperature

KW - B. Metallic glasses

KW - C. Casting

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U2 - 10.1016/j.intermet.2012.03.038

DO - 10.1016/j.intermet.2012.03.038

M3 - 期刊論文

AN - SCOPUS:84865650200

SN - 0966-9795

VL - 30

SP - 25

EP - 29

JO - Intermetallics

JF - Intermetallics

ER -

Prominent plasticity of Mg-based bulk metallic glass composites by ex-situ spherical Ti particles

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Keywords

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