Identification of primary crystals in ZrTiCuNiBe metallic bulk glasses

摘要

ZrTiCuNiBe metallic galsses which can be produced by comparably slow solidification of the liquid melt contain small fractions of primary crstals. These primary crystals were investigated by TEM, TEM/-and SEM/EDX, and FIM/AP. The chemical composition of the crystals was found to be ZrBe_2 with small Ti, Cu and Ni additions. The size, volume fraction and morphology of the primary crystals depden on the cooling rate. The tendency of crystal formation increases with higher Be contents. The crystallization behavior can be correlated to constitutional properties of the quais-ternary ZrTi-CuNi-Be system.