【摘要】 研究了混合稀土的加入量及合金的热处理工艺对A356合金的组织及力学性能的影响。结果表明：在该合金中加入混合稀土具有较好的细化、变质作用,对其力学性能具有改善和提高作用；能够满足使用要求的较佳稀土加入量范围为0．12%～0．28%。更多还原

【Abstract】 The effects of the mixed RE contents and heat treatment on mechanical properties and structure of A356 alloy were studied.There were heat refining and modifying when mixed RE was added to A356 alloy. Mechanical properties were improved to some extent too.The optimal content of RE was 0.12%—0.28%.更多还原