复相合金与单相合金相比，除基体相以外，还有第二相存在。第二相有两种，可变形微粒和不可变形微粒，当第二相以细小弥散的微粒均匀分布于基体相中时，将会产生显著的强化作用，这种强化作用称为第二相强化。
认为固溶强化和第二相强化是加入合金元素强化镁合金的主要方式。
It is thought that solution strengthening and second phase strengthening are two main ways for improving mechanical properties of magnesium alloy.
第二相强化奥氏体不锈钢在腐蚀性较强、耐磨性较弱的环境中耐腐蚀磨损性能较好。
On the other hand, when the environment was strong erode and faint abrasion, the second phrase strengthening austenite stainless steel have well corrosion wear characteristics.
指出增加变形速率使近缝区金属强化机制为位错强化、一定数量的岛状第二相强化和细晶粒强化。
It has been indicated that the strengthening mechanism of the weld metal is the dislocation, a number of second island phases and fine grain size.
应用推荐