Using the cyclic hot pressing method, Al/Mg laminated composites with a Zn interlayer were prepared, and the effect of temperature on the composite interfaces was studied. At 420℃, the composites interface is composed of HCP-Zn solid solution near the Al side and Laves phase near the Mg side. At 460℃, FCC-Al phase and τ-phase appear near the Al side, while τ-phase and HCP-Mg solid solution appear near the Mg side. Above 500℃, the interface is mainly composed of Al-Mg intermetallic compounds. The change of solubility during the formation of the composite causes the polarization of solute atoms in Zn and Al solid solutions, resulting in defects, such as increased grain boundary stress and lattice distortion. These defects lead to failure of the interface near the aluminum side of the composites. Composites prepared at 420℃ show the best ductile fracture properties. With the increase of preparation temperature, the fracture mode is transformed into brittle fracture induced by β-phase.

中文翻译：

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循环热压 Al/Mg 与 Zn 中间层复合材料的界面微观结构及断裂机理研究


采用循环热压法制备了具有 Zn 夹层的 Al/Mg 层合复合材料，并研究了温度对复合材料界面的影响。在 420°C 时，复合材料界面由靠近 Al 侧的 HCP-Zn 固溶体和靠近 Mg 侧的 Laves 相组成。在 460°C 时，FCC-Al 相和 τ 相出现在 Al 侧附近，而 τ 相和 HCP-Mg 固溶体出现在 Mg 侧附近。500°C 以上，界面主要由 Al-Mg 金属间化合物组成。复合材料形成过程中溶解度的变化导致溶质原子在 Zn 和 Al 固溶体中极化，从而产生晶界应力增加和晶格畸变等缺陷。这些缺陷导致复合材料铝侧附近的界面失效。在 420°C 下制备的复合材料显示出最佳的延展性断裂性能。随着制备温度的升高，断裂模式转变为β相诱导的脆性断裂。