在Mg-Zn-Zr系ZK60变形镁舍金中分别添加0.9%稀土元素钇和铈,对合金进行了热挤压及时效处理,研究了稀土元素在ZK60合金中的存在形式和作用机理及其对合金组织与性能的影响.结果表明:添加的稀土元素钇和铈均能够明显细化ZK60铸态组织,改善合金的力学性能.稀土元素钇的强化作用尤为明显,合金的室温抗拉强度提高了12.6%;而稀土元素铈则提高了合金的伸长率.
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