| Title |
Effect of Sr on the Corrosion Properties of Mg-4Al-2Sn Heat Resistant Alloy |
| Authors |
김대한(Dae Han Kim); 최종민(Jong Min Choi); 조대현(Dae Hyun Jo); 박익민(Ik Min Park) |
| DOI |
https://doi.org/10.3365/KJMM.2014.52.3.195 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
magnesium alloy; casting; microstructure; corrosion test |
| Abstract |
The microstructure and corrosion properties of an as-cast Mg-4Al-2Sn alloy with different levels of Sr content (0, 1, 2 wt%) were investigated. A new rod-like MgSnSr ternary phase was identified in the alloys containing Sr. The grain size decreased with an increasing Sr content. The corrosion properties were improved by increasing the Sr content. The improved corrosion properties of the Mg-4Al-2Sn-Sr alloys is related to MgSnSr phase and grain refinement. The uniformly dispersed MgSnSr phase within the grain and grain boundary perform the role of an effective barrier for retarding corrosion propagation. |