TY - JOUR
T1 - Plasticity improvement of ZrCu-based bulk metallic glass by ex situ dispersed Ta particles
AU - Li, J. B.
AU - Jang, J. S.C.
AU - Jian, S. R.
AU - Chen, K. W.
AU - Lin, J. F.
AU - Huang, J. C.
N1 - Funding Information:
The authors are gratefully to acknowledge the sponsorship by National Science Council of Taiwan, ROC , under the Project No. NSC95-2210-E-214-015-MY3 and NSC98-2221-E-008-116-MY3. 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 - 2011/10/25
Y1 - 2011/10/25
N2 - The (Zr48Cu36Al8Ag8)99.25Si0.75-based bulk metallic glass composite (BMGC) rods ex situ dispersed with Ta particles (with a diameter of 2-4mm) have been successfully fabricated by suction casting and characterized. These Ta-added BMGCs exhibit similar thermal properties in comparison with its base alloy counterpart, with relatively high glass forming ability (GFA). The results of compression test show that a superior mechanical performance with up to 22% compressive plastic strain, 1800MPa yield strength and 1850MPa fracture strength at room temperature can be obtained for the 2mm diameter rod of the ZrCu-based BMGC with 10vol.% Ta particles. These ex situ dispersed Ta particles (20±8μm) would arrange as semi-uniform confinement zones to restrict the shear band propagation. In addition, for a given Ta particle size, higher volume fraction particles would lead to more interfacial areas, shorter inter-particle spacings, smaller confinement zone sizes than the smaller volume fraction particles, and results in presenting larger compression plasticity.
AB - The (Zr48Cu36Al8Ag8)99.25Si0.75-based bulk metallic glass composite (BMGC) rods ex situ dispersed with Ta particles (with a diameter of 2-4mm) have been successfully fabricated by suction casting and characterized. These Ta-added BMGCs exhibit similar thermal properties in comparison with its base alloy counterpart, with relatively high glass forming ability (GFA). The results of compression test show that a superior mechanical performance with up to 22% compressive plastic strain, 1800MPa yield strength and 1850MPa fracture strength at room temperature can be obtained for the 2mm diameter rod of the ZrCu-based BMGC with 10vol.% Ta particles. These ex situ dispersed Ta particles (20±8μm) would arrange as semi-uniform confinement zones to restrict the shear band propagation. In addition, for a given Ta particle size, higher volume fraction particles would lead to more interfacial areas, shorter inter-particle spacings, smaller confinement zone sizes than the smaller volume fraction particles, and results in presenting larger compression plasticity.
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U2 - 10.1016/j.msea.2011.08.006
DO - 10.1016/j.msea.2011.08.006
M3 - Article
AN - SCOPUS:80052384321
SN - 0921-5093
VL - 528
SP - 8244
EP - 8248
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
IS - 28
ER -