Laser-induced Self-propagating Reaction Synthesis Of Quasicrystal Materials And Amorphous Materials

Noticing that strong exothermic reaction due to large negative enthalpy of mixing can occur among major components of Ti-Zr-based Quasicrystal alloy systems and Zr-based bulk Amorphous alloy systems , we developed for the first time a new technique for fabricating both Ti-Zr-Ni systems Quasicrystal materials and Zr-Al-Ni-Cu systems Amorphous-based composite materials using Laser-induced Self - propagating Reaction Synthesis (LSRS).In this paper, the microstructure of LSRS was systematically studied by using XRD and TEM for both the Laser梚nduced Self - propagating Reaction Synthesis of Ti-Zr-Ni systems Quasicrystal materials and Zr-Al-Ni-Cu systems Amorphous-based composite materials. Furthermore, influence of laser power on the microstructure , property and microhardness of LSRS products was also investigated. The study shows that the products of Quasicrystal materials mainly consists of a-(Ti, Zr) solid-solution, I-phase, and C14-Laves phase with the MgZn2 structure type. And the products of Amorphous materials consists of amorphous, Zr3Al2 and Zr2Cu phases.