Investigation of the Precipitation in Mg-Zr Alloys
The Mg-Zr alloys with the Zr contents of 0.2%, 0.4%, 0.6% and 0.8% were prepared using induction melting, metal mold centrifugal casting process. The microstructures of the alloys were analyzed by scanning electron microscope, energy spectrum analysis, transmission electron microscope and their mechanical properties were also measured with tensile test. The results show that there are many micro- and nano-sized Zr-rich or Zr particles dispersed in Mg-Zr alloys. The nano-sized Zr-rich particle consists of a rectangle shaped Zr core and its surrounding Mg (Zr) solid solution shell with round exterior; a single Zr particle appears a coherent lattice relationship with matrix.
Hun Guo, Zuo Dunwen, Tang Guoxing
G. B. Lin et al., "Investigation of the Precipitation in Mg-Zr Alloys", Advanced Materials Research, Vol. 142, pp. 99-102, 2011