| 초록 |
The aging characteristics of gas atomized Mg-6wt%Al-1wt%Zn powder alloys, followed by compaction under the pressure of 700MPa at 320℃ for 10min were investigated. The Mg-6wt%Al-1wt%Zn powder alloy showed the microstructure of super-saturated primary α solid solution, eutectic α and β-(Mg17Al12) compound. After aging treatment, the precipitates of Mg17Al12 and Mg32(Al•Zn)49 were detected by XRD and TEM. The peak hardness appeared after aging treatment for 16h. Based on the microstructure and hardness, the aging characteristics of Mg-6wt%Al-1wt%Zn powder alloy were discussed as compared with the wrought Mg-6wt%Al-1wt%Zn alloy. |
