To improve the mechanical properties of AZ91D magnesium alloy, the submicrocrystal Al-Ti-B master alloy was prepared with copper mold inject casting method, and the influence of submicrocrystal Al-Ti-B master alloy on the microstructure and mechanical properties of AZ91D was investigated. Results show that, the distribution of TiB2 phase in submicrocrystal Al-Ti-B alloy is even and disperse, and the average size of TiAl3 phase is reduced from 10-30 μm to ~1 μm. The properties of AZ91D refined with submicrocrystal Al-Ti-B master alloy are better than that with coarse-grained Al-Ti-B master alloy without copper mold inject casting. The tensile strength, elongation and Brinell hardness of AZ91D are increased by 10.6%, 25% and 18.1%, respectively. Therefore, refinement of AZ91D with submicrocrystal Al-Ti-B that is obtained by copper mold inject casting is an effective method to improve its mechanical properties
Is data on this page outdated, violates copyrights or anything else? Report the problem now and we will take corresponding actions after reviewing your request.