Development of Mg/Al clad sheet for air craft material and anti-corrosion

镁合金在实际应用的金属中重量最轻，比强度重量比也最高。然而，由于变形镁合金在室温下具有较差的成形性和耐腐蚀性，因此已经研究了用薄铝板制造Mg/Al复合板：对于具有最佳制造工艺的Mg/Al组合，可以实现高耐腐蚀性和良好的成形性。在本研究中，我们在300℃的轧制温度下通过轧制复合制备Mg/Al复合板。因此，获得了以下结果。首先，镁和铝板可以通过轧制复合在30%的压下率下结合。第二，通过每道次300℃保温1h的退火工艺，可显著提高镁合金的成形性能。最后，在镁和铝板之间插入钛箔防止了V形弯曲试验中表面铝板的剥离。

Magnesium alloys have the highest light-weight among practical metals, and highspecific-strength to weight ratios. However, because wrought magnesium alloys have poor formability and corrosion resistance at room temperature, the manufacture of Mg/Al clad sheets with thin aluminum sheets has been investigated : high corrosion resistance and good formability can be achieved for a Mg/Al combination with an optimum manufacturing process. In this study, we fabricated Mg/Al clad sheets by rollbonding at a rolling temperature of 300℃. Consequently, the following results were obtained. Firstly, the magnesium and aluminum sheets could be bonded by rollbonding at 30% reduction. Secondly, by annealing at 300℃ for 1h for each pass of rolling, the formability of magnesium was improved markedly. Finally, the insertion of titanium foil between the magnesium and aluminum sheets prevented the peeling of the surface aluminum sheet in the V bending test.