Effects of melt temperature on microstructure and properties of Mg-Zn-Er alloy with ultrasonic treatment

Effects of introducing ultrasonic temperature on microstructure and properties of Mg-Zn-Er alloy prepared by high intensity ultrasonic melt treatment were analyzed. The results indicate that as-cast microstructure of the alloy is converted from coarse dendrite into uniformly distributed fine spheroidized grain with increasing in introducing ultrasonic temperature in condition of ultrasonic time for 100 s and ultrasonic power of 600W, in which an optimized temperature is 718°C. The grain with desirable size and uniform distribution and roundness in Mg-5Zn-2Er alloy treated by ultrasonic at 718°C can be observed, and tensile strength and elongation reach 199. 6MPa and 11. 6% at room temperature, respectively, exhibiting the maximum value, while tensile strength exhibits the minimum values at high temperature.

Duke Scholars

Author Zhaohui Wang Pathology