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通过分别添加Mn、Si、Zn、Ni四种合金元素进行界面调控,采用X射线衍射分析了钢-铝复合材料界面生成物相的类型,并对界面物相的生成进行了热力学计算和分析。结果表明:钢-铝复合材料界面生成的化合物主要是Fe2Al5,界面合金化处理不能改变钢-铝复合材料界面化合物的生成类型。但添加Si、Zn合金元素能在500℃扩散退火,保温1 h热处理工艺制度下,延缓Fe2Al5相生成时间,改善界面的结合。Mn、Ni合金元素对延缓界面化合物Fe2Al5相生成无益。
The interface of the four alloying elements Mn, Si, Zn and Ni were controlled by X-ray diffraction. The phases of the product phase of the steel-aluminum composite were analyzed by X-ray diffraction. The formation and phase of the interface phase were calculated and analyzed thermodynamically. The results show that the main compounds produced at the interface of steel-aluminum composites are Fe2Al5. The interfacial alloying treatment can not change the formation type of the interface compounds of steel-aluminum composites. However, the addition of Si and Zn alloy elements can be diffusion-annealed at 500 ℃ and the heat treatment process for 1 h can delay the formation of Fe2Al5 phase and improve the interface combination. Mn, Ni alloying elements to delay the interfacial compound Fe2Al5 phase is not beneficial.