Herein, an 2024-Al/AZ31-Mg laminated composite was prepared by hot-pressing sintering using powder metallurgy integrated forming and sintering. Effects of sintering temperature on the microstructure and mechanical properties of the matrix and interface of Al/Mg laminated composites were investigated. The mechanisms of interface formation and evolution were obtained. The results indicate that with sintering temperature increases from 475°C to 550°C, the densification of the Al/Mg matrix gradually increases. Intermetallic compounds were generated at the interface, and their thickness increased from 56.4 μm to 195.1 μm. In addition, the interface structure was composed of an Al7Cu3Mg6, Al3Mg2 and Al12Mg17 layer. At a sintering temperature of 525°C, the tensile strength and interface shear strength of Al/Mg laminated composites were 37.8 MPa and 31.13 MPa, respectively. The shear fracture occurred between the Al3Mg2 layer and Al12Mg17 layer and was a mixed cleavage and intergranular fracture.

中文翻译：

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粉末冶金一体成型烧结制备2024-Al/AZ31-Mg叠层复合材料

在此，采用粉末冶金一体成型烧结技术，通过热压烧结制备了2024-Al/AZ31-Mg层状复合材料。研究了烧结温度对Al/Mg层状复合材料基体和界面组织和力学性能的影响。获得了界面形成和演化的机制。结果表明，随着烧结温度从 475°C 升高到 550°C，Al/Mg 基体的致密化程度逐渐增加。界面处生成金属间化合物，其厚度从 56.4 μm 增加到 195.1 μm。此外，界面结构由Al7Cu3Mg6、Al3Mg2和Al12Mg17层组成。在525°C的烧结温度下，Al/Mg层状复合材料的拉伸强度和界面剪切强度分别为37.8 MPa和31 MPa。分别为 13 兆帕。剪切断裂发生在Al3Mg2层和Al12Mg17层之间，为混合解理和晶间断裂。