Fabrication and mechanical properties of glassy coil springs

摘要

Glassy coil springs with wire diameters of 4 and 6 mm and a mean diameter of 40 mm were fabricated by water quenching special design quartz tube springs contained liquid Zr-based alloy. The glassy structures and mechanical properties of the springs were examined by X-ray diffraction, differential scanning calorimetry, scanning electron microscopy and an Instron type testing machine. The elastic constants for the two glassy coil springs are 2.43 and 14.26 N/mm, respectively, which is lower than generally crystalline materials. In order to increase to the stored energy of glassy coil springs, redesign of the present coil springs is suggested.