Abstract
The tensile tests were carried out with Mg-3.5%Li alloy in the strain rate from 0.05mm/min to 50mm/min. The influence of strain rate on tensile properties and deformation behaviors of the alloy was investigated. It is shown that the ductility instability during the tensile deformation occurred at the tensile rate of 0.5mm/min and 5mm/min. The ductility instability was found to apt to occur at the tensile rate of 0.5mm/min. With the increasing strain rate, the ultimate tensile strength and elongation of the alloy decrease and the constriction ratios of fracture area increase. At the tensile rate of 0.5mm/min, the alloy exhibited the lowest elongation because of the severe ductility instability.
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