Effects of room-temperature rolling on microstructure and crystallization behavior of Zr₅₅Cu₄₀Al₅ metallic glass

Using X-ray diffraction, transmission electron microscopy, and differential scanning calorimetry, the effects of room-temperature rolling and subsequent annealing treatment on the microstructure and crystallization behavior of the Zr₅₅Cu₄₀Al₅ metallic glass ribbons have been investigated. High density of shear bands with spacings less than 100 nm and ordered clusters of 3-5 nm in size in the shear band regions were observed in the room-temperature rolled Zr₅₅Cu₄₀Al₅ metallic glass ribbons. In addition, the rolling deformation changes the crystallization behavior of the Zr₅₅Cu₄₀Al₅ metallic glass during the isothermal annealing treatment and results in the formation of a new crystalline phase.