Abstract A porthole die co-extrusion (PCE) process was proposed to fabricate the Al/Mg/Al laminate. The results showed that the laminate was successfully extruded without voids or cracks on the Al/Mg interface. The transition layer was formed and its thickness was increased with the increase of temperature. Partial dynamic recrystallization (DRX) occurred in Al layer, and the texture of Al layer has strong E {111} and Y {111} shear-typed components and relative weak Copper {112} and S {123} rolling components. The near complete DRXed grain structure was observed in Mg layer, and the average grain size increases with increasing temperature. Mg layer has strong basal plane texture with (0001) planes parallel to extrusion direction and prismatic planes with random distribution. At lower extrusion temperature, both the Al and Mg matrixes exhibited higher hardness. Furthermore, the hardness of Al/Mg interface is lower than that of the Al and Mg matrix.

中文翻译：

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孔口模共挤工艺制备铝/镁/铝层压板

摘要 提出了一种孔口模具共挤（PCE）工艺来制造铝/镁/铝层压板。结果表明，层压板成功挤出，Al/Mg 界面没有空隙或裂纹。随着温度的升高，过渡层形成且厚度增加。Al层发生部分动态再结晶（DRX），Al层织构具有较强的E{111}和Y{111}剪切型成分以及相对较弱的铜{112}和S{123}轧制成分。在Mg层中观察到接近完整的DRXed晶粒结构，平均晶粒尺寸随着温度的升高而增加。Mg层基面织构强，(0001)面平行于挤压方向，棱柱面随机分布。在较低的挤出温度下，Al 和 Mg 基体都表现出更高的硬度。此外，Al/Mg 界面的硬度低于 Al 和 Mg 基体的硬度。