The Microstructure Evolution of Semi Solid AM80 Alloy Added Zr and Its Compression Behavior At Elevated Temperature

In this research, the effect of Zr addition on the microstructure of semi solid AM80 alloy by cooling plate was investigated and compression test on the alloys at elevated temperature was performed. First, in order to catch the semi-solid temperature range of Zr added AM80 alloy, a natural cooling experiment was conducted to acquire the cooling curve of Zr added AM80 alloy. Second, the microstructure observation by Optical scope (OM), scanning electron scope (SEM) and energy dispersion spectroscopy (EDS) was carried out to confirm the formed phase and change of its morphology in the alloy during elevated temperature. Third, compression test was carried out under deformation temperature range from 300 to 440^oC, in present study. After natural cooling, its cooling curve with a liquidus temperature of 603^oC and solidus temperature of 435^oC can be obtained.