The high temperature tensile and fracture behavior of Zr_(50)Al_(40)Cu_(10) metallic glass at the temperature range in the vicinity of glass transition were investigated. Tensile tests were carried out at room tempera...The high temperature tensile and fracture behavior of Zr_(50)Al_(40)Cu_(10) metallic glass at the temperature range in the vicinity of glass transition were investigated. Tensile tests were carried out at room temperature, 350-420 ℃, and in the supercooled liquid region temperature range, respectively. Obvious plastic deformation was initiated at temperature about 80 ℃ lower than the glass transition temperature. The ultimate tensile strength decreases with the increase of testing temperature and the ductility increases with temperature. At temperature higher than Tg, viscous fl ow of Non-Newtonian fl uid led to super plastic deformation behavior. The deformation process under tension was inhomogeneous, and remarkable serrations were observed on the stress-strain curve near glass transition temperature.展开更多
基金financially supported by the National Natural Sciences Foundation of China(Grant No.51171119 and No.51401129)
文摘The high temperature tensile and fracture behavior of Zr_(50)Al_(40)Cu_(10) metallic glass at the temperature range in the vicinity of glass transition were investigated. Tensile tests were carried out at room temperature, 350-420 ℃, and in the supercooled liquid region temperature range, respectively. Obvious plastic deformation was initiated at temperature about 80 ℃ lower than the glass transition temperature. The ultimate tensile strength decreases with the increase of testing temperature and the ductility increases with temperature. At temperature higher than Tg, viscous fl ow of Non-Newtonian fl uid led to super plastic deformation behavior. The deformation process under tension was inhomogeneous, and remarkable serrations were observed on the stress-strain curve near glass transition temperature.
