镁合金挤压型材往往产生裂口。本文用国产xw-01型电子探针对镁合金型材裂口、铸锭、断口及型材高倍组织进行分析。结果表明,裂口边部富集有大量的Cl、K、Ca元素,并且在铸锭试片断口和型材高倍组织中均发现有Cl、K、Ca元素。证明了裂口的成因是由熔剂的夹渣引起的,为解决镁合金质量问题提供依据。 Extruded magnesium alloy tend to produce cracks. In this paper, the domestic xw-01-type electron probe for magnesium alloy profiles cracking, ingot, fracture and profile high magnification organizations were analyzed. The results show that a large amount of Cl, K and Ca elements are enriched in the edge of the rift, and Cl, K and Ca elements are found in the fracture surface of the ingot specimen and in the high-magnification section of the profile. It proves that the cause of the rift is caused by flux inclusion and provides the basis for solving the quality problem of magnesium alloy.