The present study is aimed to investigate the effects of zinc electroplated coating and hot dipping at 480 °C on the microstructure and mechanical properties of pure aluminum/40NiCrMo2-2 steel bimetal interface produced by compound casting at 780 °C. Accordingly, microstructural studies and interface shear strength were determined using optical microscope, scanning electron microscope, and push-out test. Results showed that the interface layer in all the samples, independent from the coating type, is composed of two sub-layers of Fe₂Al₅ and FeAl₃. Furthermore, the linear analysis results and elemental distribution map of the interface indicated that no considerable amount of zinc was present in the interface of the samples. Based on the results, the maximum strength was related to the electroplated sample with the value of 45.1 MPa, while the hot-dipped sample had the strength of 37.5 MPa, which was attributed to the formation of interface layer with less defects in the electroplated sample.

本研究旨在研究镀锌涂层和480 ℃热浸镀对780 ℃复合铸造纯铝/40NiCrMo2-2钢双金属界面组织和力学性能的影响。因此，使用光学显微镜、扫描电子显微镜和推出试验来确定微观结构研究和界面剪切强度。结果表明，所有样品中的界面层，与涂层类型无关，由 Fe ₂ Al ₅和 FeAl ₃两个亚层组成. 此外，界面的线性分析结果和元素分布图表明，样品界面中没有大量的锌存在。结果表明，最大强度与电镀样品有关，为45.1 MPa，而热浸样品的强度为37.5 MPa，这是由于电镀样品中形成了缺陷较少的界面层.