TY - JOUR
T1 - Ultrasonic characteristics of porous Zr55Cu30Al 10Ni5 bulk metallic glass fabricated by spark plasma sintering
AU - Xie, Guoqiang
AU - Fukuhara, Mikio
AU - Louzguine-Luzgin, Dmitri V.
AU - Inoue, Akihisa
N1 - Funding Information:
The work was supported by a Grant-In-Aid for Science Research in a priority Area “ Research and Development Project on Advanced Metallic Glasses, Inorganic Materials, and Joining Technology ”, and by Grant-In-Aid for Scientific Research (C) (No. 20560639) from the Ministry of Education, Science, Sports and Culture , Japan.
PY - 2010/10
Y1 - 2010/10
N2 - The elastic and damping behaviors of porous Zr55Cu 30Al10Ni5 glassy alloy fabricated by a spark plasma sintering (SPS) process were investigated as a function of porosity at room temperature. Bulk modulus (K) and Lam parameter (λ) decrease in a parabolic manner, while Young's (E) and shear (G) moduli decrease gently with an increase in porosity. The order of K, λ, E, and G, which is monopolistically characteristic of nonporous glassy alloys, changes to the order of E, K, G, and λ, reflecting a crystalline-like deformation mode which is further confirmed by combining the decrease in Poisson's ratio with the increase in G/K and E/K ratios up to 34.4% porosity. An increase in porosity induces frequency convergence for longitudinal wave, as well as increases in the longitudinal and shear attenuation coefficients.
AB - The elastic and damping behaviors of porous Zr55Cu 30Al10Ni5 glassy alloy fabricated by a spark plasma sintering (SPS) process were investigated as a function of porosity at room temperature. Bulk modulus (K) and Lam parameter (λ) decrease in a parabolic manner, while Young's (E) and shear (G) moduli decrease gently with an increase in porosity. The order of K, λ, E, and G, which is monopolistically characteristic of nonporous glassy alloys, changes to the order of E, K, G, and λ, reflecting a crystalline-like deformation mode which is further confirmed by combining the decrease in Poisson's ratio with the increase in G/K and E/K ratios up to 34.4% porosity. An increase in porosity induces frequency convergence for longitudinal wave, as well as increases in the longitudinal and shear attenuation coefficients.
KW - B. Elastic properties
KW - B. Glasses, metallic
KW - C. Powder metallurgy
KW - C. Sintering
KW - D. Microstructure
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U2 - 10.1016/j.intermet.2010.03.029
DO - 10.1016/j.intermet.2010.03.029
M3 - Article
AN - SCOPUS:77955557088
SN - 0966-9795
VL - 18
SP - 2014
EP - 2018
JO - Intermetallics
JF - Intermetallics
IS - 10
ER -