Dynamic mechanical relaxation behavior of Zr35Hf17.5Ti5.5Al12.5Co7.5Ni12Cu10 high entropy bulk metallic glass

L. T. Zhang; Y. J. Duan; T. Wada; H. Kato; J. M. Pelletier; D. Crespo; E. Pineda; J. C. Qiao

doi:10.1016/j.jmst.2020.11.074

Dynamic mechanical relaxation behavior of Zr₃₅Hf_17.5Ti_5.5Al_12.5Co_7.5Ni₁₂Cu₁₀ high entropy bulk metallic glass

L. T. Zhang, Y. J. Duan, T. Wada, H. Kato, J. M. Pelletier, D. Crespo, E. Pineda, J. C. Qiao

School of Mechanics,Civil Engineering and Architecture

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

38 Scopus citations

Abstract

Non-equiatomic high entropy bulk metallic glasses were reported recently and show unique mechanical and physical properties. Dynamic mechanical relaxation behavior of Zr₃₅Hf_17.5Ti_5.5Al_12.5Co_7.5Ni₁₂Cu₁₀ high entropy bulk metallic glass was investigated by dynamic mechanical analysis (DMA) and the mechanical spectra could be well described by the quasi-point defects (QPD) theory. Compared to typical metallic glasses, the intensity of the β relaxation of Zr₃₅Hf_17.5Ti_5.5Al_12.5Co_7.5Ni₁₂Cu₁₀ high entropy bulk metallic glass is lower due to the sluggish diffusion. At the same time, the correlation factor χ is higher than that of conventional metallic glasses and this is ascribed to the high configuration entropy. In parallel, physical aging below the glass transition temperature leads to a decrease of atomic mobility, caused by a decrease of the concentration of defects.

Original language	English
Pages (from-to)	248-255
Number of pages	8
Journal	Journal of Materials Science and Technology
Volume	83
DOIs	https://doi.org/10.1016/j.jmst.2020.11.074
State	Published - 30 Aug 2021

Keywords

High entropy bulk metallic glass
Mechanical relaxation
Physical aging
Quasi-point defects

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title = "Dynamic mechanical relaxation behavior of Zr35Hf17.5Ti5.5Al12.5Co7.5Ni12Cu10 high entropy bulk metallic glass",

abstract = "Non-equiatomic high entropy bulk metallic glasses were reported recently and show unique mechanical and physical properties. Dynamic mechanical relaxation behavior of Zr35Hf17.5Ti5.5Al12.5Co7.5Ni12Cu10 high entropy bulk metallic glass was investigated by dynamic mechanical analysis (DMA) and the mechanical spectra could be well described by the quasi-point defects (QPD) theory. Compared to typical metallic glasses, the intensity of the β relaxation of Zr35Hf17.5Ti5.5Al12.5Co7.5Ni12Cu10 high entropy bulk metallic glass is lower due to the sluggish diffusion. At the same time, the correlation factor χ is higher than that of conventional metallic glasses and this is ascribed to the high configuration entropy. In parallel, physical aging below the glass transition temperature leads to a decrease of atomic mobility, caused by a decrease of the concentration of defects.",

keywords = "High entropy bulk metallic glass, Mechanical relaxation, Physical aging, Quasi-point defects",

author = "Zhang, {L. T.} and Duan, {Y. J.} and T. Wada and H. Kato and Pelletier, {J. M.} and D. Crespo and E. Pineda and Qiao, {J. C.}",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2021",

month = aug,

day = "30",

doi = "10.1016/j.jmst.2020.11.074",

language = "英语",

volume = "83",

pages = "248--255",

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TY - JOUR

T1 - Dynamic mechanical relaxation behavior of Zr35Hf17.5Ti5.5Al12.5Co7.5Ni12Cu10 high entropy bulk metallic glass

AU - Zhang, L. T.

AU - Duan, Y. J.

AU - Wada, T.

AU - Kato, H.

AU - Pelletier, J. M.

AU - Crespo, D.

AU - Pineda, E.

AU - Qiao, J. C.

PY - 2021/8/30

Y1 - 2021/8/30

N2 - Non-equiatomic high entropy bulk metallic glasses were reported recently and show unique mechanical and physical properties. Dynamic mechanical relaxation behavior of Zr35Hf17.5Ti5.5Al12.5Co7.5Ni12Cu10 high entropy bulk metallic glass was investigated by dynamic mechanical analysis (DMA) and the mechanical spectra could be well described by the quasi-point defects (QPD) theory. Compared to typical metallic glasses, the intensity of the β relaxation of Zr35Hf17.5Ti5.5Al12.5Co7.5Ni12Cu10 high entropy bulk metallic glass is lower due to the sluggish diffusion. At the same time, the correlation factor χ is higher than that of conventional metallic glasses and this is ascribed to the high configuration entropy. In parallel, physical aging below the glass transition temperature leads to a decrease of atomic mobility, caused by a decrease of the concentration of defects.

AB - Non-equiatomic high entropy bulk metallic glasses were reported recently and show unique mechanical and physical properties. Dynamic mechanical relaxation behavior of Zr35Hf17.5Ti5.5Al12.5Co7.5Ni12Cu10 high entropy bulk metallic glass was investigated by dynamic mechanical analysis (DMA) and the mechanical spectra could be well described by the quasi-point defects (QPD) theory. Compared to typical metallic glasses, the intensity of the β relaxation of Zr35Hf17.5Ti5.5Al12.5Co7.5Ni12Cu10 high entropy bulk metallic glass is lower due to the sluggish diffusion. At the same time, the correlation factor χ is higher than that of conventional metallic glasses and this is ascribed to the high configuration entropy. In parallel, physical aging below the glass transition temperature leads to a decrease of atomic mobility, caused by a decrease of the concentration of defects.

KW - High entropy bulk metallic glass

KW - Mechanical relaxation

KW - Physical aging

KW - Quasi-point defects

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U2 - 10.1016/j.jmst.2020.11.074

DO - 10.1016/j.jmst.2020.11.074

M3 - 文章

AN - SCOPUS:85100779696

SN - 1005-0302

VL - 83

SP - 248

EP - 255

JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

ER -

Dynamic mechanical relaxation behavior of Zr₃₅Hf_17.5Ti_5.5Al_12.5Co_7.5Ni₁₂Cu₁₀ high entropy bulk metallic glass

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