TY - JOUR
T1 - Effects of Ni addition on the glass-forming ability, mechanical properties and corrosion resistance of Zr-Cu-Al bulk metallic glasses
AU - Li, Y. H.
AU - Zhang, W.
AU - Dong, C.
AU - Qiang, J. B.
AU - Fukuhara, M.
AU - Makino, A.
AU - Inoue, A.
PY - 2011/11/15
Y1 - 2011/11/15
N2 - The thermal stability, glass-forming ability (GFA), mechanical properties and corrosion resistance of Zr60Cu25-xAl15Nix (x=0-25at.%) bulk metallic glasses (BMGs) were systematically investigated. The additional Ni greatly enhances the thermal stability and GFA of BMGs. For alloy with x=15, a fully glassy rod with a critical diameter up to 18mm can be obtained by copper mold casting. In addition, the strength and plasticity of BMGs are effectively improved by adding Ni, and they show remarkable correlations with glass transition temperature and Poisson's ratio or G/B value, respectively. A Zr60Cu5Al15Ni20 BMG exhibits largest compressive plastic strain of 5.5%, yielding strength of 1755MPa and Young's modulus of 83GPa at ambient temperature. Moreover, the electrochemical potentiodynamic polarization curves demonstrate that replacement of Cu by Ni improves the corrosion resistance in chloride-ion-containing solutions significantly.
AB - The thermal stability, glass-forming ability (GFA), mechanical properties and corrosion resistance of Zr60Cu25-xAl15Nix (x=0-25at.%) bulk metallic glasses (BMGs) were systematically investigated. The additional Ni greatly enhances the thermal stability and GFA of BMGs. For alloy with x=15, a fully glassy rod with a critical diameter up to 18mm can be obtained by copper mold casting. In addition, the strength and plasticity of BMGs are effectively improved by adding Ni, and they show remarkable correlations with glass transition temperature and Poisson's ratio or G/B value, respectively. A Zr60Cu5Al15Ni20 BMG exhibits largest compressive plastic strain of 5.5%, yielding strength of 1755MPa and Young's modulus of 83GPa at ambient temperature. Moreover, the electrochemical potentiodynamic polarization curves demonstrate that replacement of Cu by Ni improves the corrosion resistance in chloride-ion-containing solutions significantly.
KW - Bulk metallic glasses
KW - Corrosion resistance
KW - Glass-forming ability
KW - Mechanical properties
KW - Zr-based alloys
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U2 - 10.1016/j.msea.2011.07.077
DO - 10.1016/j.msea.2011.07.077
M3 - Article
AN - SCOPUS:80053638197
SN - 0921-5093
VL - 528
SP - 8551
EP - 8556
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
IS - 29-30
ER -