TY - JOUR
T1 - Mechanical properties and corrosion behavior of (Cu0.6Hf0.25Ti0.15)90Nb10 bulk metallic glass composites
AU - Qin, Chunling
AU - Zhang, Wei
AU - Amiya, Kenji
AU - Asami, Katsuhiko
AU - Inoue, Akihisa
PY - 2007/3/25
Y1 - 2007/3/25
N2 - An in situ formed (Cu0.6Hf0.25Ti0.15)90Nb10 (number indicate at.%) bulk metallic glass (BMG) composite was prepared by copper mold casting. The ductile Nb-rich crystalline phase with a dendritic structure disperses homogeneously in the glassy matrix. The (Cu0.6Hf0.25Ti0.15)90Nb10 composite alloy exhibits much higher corrosion resistance in 1N HCl and 3 mass% NaCl solutions than the Nb-free alloy. The addition of Nb is favorable for the alloys to form a Hf-, Ti- and Nb-enriched highly protective surface film with higher chemical stability in HCl and NaCl solutions. Young's modulus, compressive fracture strength and compressive plastic strain of the (Cu0.6Hf0.25Ti0.15)90Nb10 BMG composite are 106 GPa, 2625 MPa and 12.5%, respectively. The increase in compressive strain-to-failure is due to the ductile dendrites restricting shear band propagation, promoting the generation of multiple shear bands.
AB - An in situ formed (Cu0.6Hf0.25Ti0.15)90Nb10 (number indicate at.%) bulk metallic glass (BMG) composite was prepared by copper mold casting. The ductile Nb-rich crystalline phase with a dendritic structure disperses homogeneously in the glassy matrix. The (Cu0.6Hf0.25Ti0.15)90Nb10 composite alloy exhibits much higher corrosion resistance in 1N HCl and 3 mass% NaCl solutions than the Nb-free alloy. The addition of Nb is favorable for the alloys to form a Hf-, Ti- and Nb-enriched highly protective surface film with higher chemical stability in HCl and NaCl solutions. Young's modulus, compressive fracture strength and compressive plastic strain of the (Cu0.6Hf0.25Ti0.15)90Nb10 BMG composite are 106 GPa, 2625 MPa and 12.5%, respectively. The increase in compressive strain-to-failure is due to the ductile dendrites restricting shear band propagation, promoting the generation of multiple shear bands.
KW - Bulk metallic glass composite
KW - Corrosion resistance
KW - Ductile dendrite
KW - Mechanical properties
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U2 - 10.1016/j.msea.2006.02.244
DO - 10.1016/j.msea.2006.02.244
M3 - Article
AN - SCOPUS:33847184203
VL - 448-451
SP - 230
EP - 234
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
ER -