However, the addition of Sn more than 0.5mass% contributed to the precipitation of of the Mg2Sn particles and the MgZn phase, and the coarsening of the latter, which led to the reduction in the ultimate strength.

• 当Sn含量进一步提高时,Mg2Sn相大量析出,同时促进了MgZn相的大量析出并粗化,从而使合金的抗拉强度有所下降。