| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1644887 | Materials Letters | 2013 | 4 Pages |
•Formation of metastable precipitates in the binary Mg–Sn alloy has been investigated.•Metastable DO19 type phase precipitates prior to precipitation of Mg2Sn phase.•DO19 type precipitates lead to higher peak hardness than Mg2Sn precipitates.
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 DO19 type phase.
