The results show that steel / aluminum composite structure with good property can be obtained by the iron finite solution in liquid aluminum alloy and iron - aluminum mutual diffusion in the interface under the condition of effective technology and composition of aluminum alloy 结果表明,在良好的工艺及铝合金成分的条件下,利用钢中的铁向液态铝合金中的有限溶解及铁和铝在界面处的相互扩散,可得到性能良好的钢与铝复合结构。