论文部分内容阅读
研究了碳钢表面处理和预热温度对ZL109与Q235液-固复合界面组织和性能的影响。结果表明,对Q235钢基底进行表面处理可以有效地改善ZL109铝合金在Q235钢基底表面的润湿性;镀Ni-Cu复合镀层可以很明显地改善铝钢液-固结合中的润湿性并防止二次氧化的产生。通过该工艺复合的Q235/ZL109复合界面为冶金结合,界面组织为FeAl3、Fe2Al5金属间化合物,并能将复合界面结合层厚度控制在15～28μm之间,显著提高复合界面的剪切强度。
The effects of carbon steel surface treatment and preheating temperature on the microstructure and properties of liquid-solid interface of ZL109 and Q235 were studied. The results show that the surface treatment of Q235 steel substrate can effectively improve the wettability of ZL109 aluminum alloy on Q235 steel substrate surface; Ni-Cu composite coating can obviously improve the wettability of liquid steel-solid combination Prevent secondary oxidation. The composite interface of Q235 / ZL109 composite is metallurgical bonding, the interface is FeAl3, Fe2Al5 intermetallic compound, and the thickness of composite bonding layer can be controlled between 15 ~ 28μm, which can significantly improve the shear strength of the composite interface.