期刊
CHINA FOUNDRY
卷 15, 期 3, 页码 216-221出版社
FOUNDRY JOURNAL AGENCY
DOI: 10.1007/s41230-018-8054-x
关键词
metallic glasses; high temperature mechanical properties; fracture behavior; plastic deformation
资金
- National Natural Sciences Foundation of China [51171119, 51401129]
The high temperature tensile and fracture behavior of Zr50Al40Cu10 metallic glass at the temperature range in the vicinity of glass transition were investigated. Tensile tests were carried out at room temperature, 350-420 degrees C, and in the supercooled liquid region temperature range, respectively. Obvious plastic deformation was initiated at temperature about 80 degrees C 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 T-g, viscous flow of Non-Newtonian fluid 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.
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