Formation of metastable precipitates in the binary Mg-Sn alloy has been investigated in the present study. The Mg-1.5 at%Sn solid solution alloy exhibits two exothermic reactions during heating up to 673 K, where lower temperature reaction with onset temperature of 364 K corresponds to the formation of metastable DO19 type precipitates, while higher temperature reaction with onset temperature of 466 K to the formation of stable Mg2Sn precipitates. The comparison of aging behavior at 423 K and 473 K indicates that lower temperature aging at 423 K results in retardation of peak aging time, but higher peak hardness due to the precipitation of DO 19 type phase.
Bibliographical noteFunding Information:
This study was supported by the World Premier Materials (WPM) Project funded by the Korea Ministry of Knowledge and Economy , and the Global Research Laboratory Program of Korea Ministry of Education, Science and Technology . Y.K. Kim is grateful for the support from the Third Stage of Brain Korea 21 Project in 2012.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering