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.
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.
KW - Casting
KW - Composites
KW - Dispersion strengthening
KW - Mechanical properties at ambient temperature
KW - Metallic glasses
UR - http://www.scopus.com/inward/record.url?scp=80052384321&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-80052384321&origin=recordpage
U2 - 10.1016/j.msea.2011.08.006
DO - 10.1016/j.msea.2011.08.006
M3 - RGC 21 - Publication in refereed journal
SN - 0921-5093
VL - 528
SP - 8244
EP - 8248
JO - Materials Science and Engineering A
JF - Materials Science and Engineering A
IS - 28
ER -