Applicability Studies of Magnesium Alloy for Subway Vehicle Body Structures

초록

Reduction of structural weight of one large component usually triggers positive synergy effects for other parts. For example, a reduction of the mass of a railway body structure could lead to weight savings in the traction system, suspension, brakes and other subsystems. Magnesium alloys are the lightest engineering metal material and its density is mostly in 1.75~1.85g/cm3 which is about a quarter of irons, and two thirds of the aluminum alloys [1]. In addition, the magnesium alloys have high specific strength, specific stiffness and good damping properties as well. In this study, the applicability of the magnesium alloys to a subway vehicle body structure was verified in aspects of structural safety, vibrational property and extrusion performance.