Developing innovative lightweight materials using tandem twin roll-casting process

已经发现，使用串联双辊连铸机开发创新的轻质材料是可能的。本研究制备了两层材料Al/Mg合金和三层材料Al/Mg/Al合金。使用含有相对高的铝含量（铝的重量比为9至12%）的高拉伸强度Mg合金作为包层的芯材料。结果表明，含12种铝的AZ 121镁合金的拉伸应力为420 MPa，0.2%屈服强度为380 MPa。对熔覆界面进行了分析，结果表明，在熔覆界面处存在一个15 μ m的由金属间化合物组成的混合层。此外，金属间化合物Al 3 Mg 2以及Mg 17 Al 12通过EDSD分析检测。进行90度弯曲测试以检查不同材料的连接。已经阐明，由于90度弯曲试验的结果，界面可以成功地被包覆。

It has been found that developing innovative lightweight materials using a tandem twin roll-caster was possible. A two layered material, Al/Mg alloys as well as a three layered material, Al/Mg/Al alloys were fabricated in the present study. A high tensile Mg alloy which contains relatively high aluminum content (weight ratio of Aluminum was 9 to 12 percent) was used as a core material of the clad. It has already been shown that AZ121 which contains 12 percents aluminum has a tensile stress of the 420MPa, and a 0.2 percent proof stress of 380MPa. As a result of analysis of the cladded interface, there is a mixed layer composed of intermetallic compounds of 15micron meters in the interface. Also, intermetallic compounds Al3Mg2 as well as Mg17Al12 were detected by EDSD analysis. A 90 degrees bending test was performed to examine the connection of the different materials. It has been clarified that the interface could be successfully cladded, due to a result of 90 degrees bending test.