| Title |
Microstructure and Mechanical Properties of the Mg Alloys Containing Ce-Rich Misch Metal |
| Authors |
권진욱(Jin Wook Kwon); 배동현(Dong Hyun Bae) |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Magnesium alloy; Misch metal; Mechanical properties; Network structure |
| Abstract |
New Mg alloys containing Ce-rich misch metal have been developed. The second phase of Mg12(rare-earth) is mostly distributed along the α-Mg phase boundaries as a hard network. The thermally stable network restricts grain boundary sliding during deformation, providing high strength at elevated temperatures. Modification of microstructure can be achieved by an addition of zinc or the variation of solidification process. The refined alloy exhibits higher strength 150 MPa and large elongation to failure around 16% at 150℃, indicating that the effects of stress concentration developed during deformation and residual stress induced during solidification are negligible in the failure behavior of such a refined alloy. |