Effects of Additional Elements on Microstructures of Zr-Based Metallic Glass Ribbons
Effects of Fe, Co and Al addition to Zr55Al10Ni5Cu30 and Zr70Cu30 metallic glass ribbons were studied. 20 at.% of Fe addition prevented Zr55Al10Ni5Cu30 molten alloys from being supercooled and resulted in nanocrystallization, while Zr55Al10Ni5Cu30 alloys containing 20 at.% Co could be quenched into a supercooled liquid region. Fe addition also degraded Zr70Cu30 metallic glass, while Al addition improved both glass phase stability and mechanical properties. Degradation of Zr-based metallic glass by Fe addition originates in the large negative enthalpy of mixing Fe with Cu.
T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran
T. Yamamoto et al., "Effects of Additional Elements on Microstructures of Zr-Based Metallic Glass Ribbons", Materials Science Forum, Vols. 539-543, pp. 2000-2005, 2007