The mechanical properties and microstructure of rolled and annealed Mg-8 massÿAl-1 massÿZn-1 massÿCa ÿAZX811ÿ alloy plates were investigated. To
investigate the effect of rolling temperature, samples were prepared by rolling at 623 K and 723 K, following which an-nealing was performed at 473 K. The size
of the Al-Ca compound was ner in the 723 K rolled sample than in the 623 K rolled sample. The higher tensile strength and elongation of the 723 K rolled sample
compared to the 623 K rolled sample were attributed to the ner Al-Ca compounds in the former. In addition, the effect of annealing temperature on the mechanical
properties and microstructure of the 723 K rolled AZX811 alloys were investigated. As a result of these investigations, a decrease in proof stress and an increase
in failure elongation were ob-served when the annealing temperature was set to 573 K. This was mainly ascribed to a decrease in the fraction of grains below 10
μm in size,