SPP 1168: Extending the Range of Applications for Magnesium Alloys

除了例如像上级比强度和优异的加工性的优点之外，镁合金的潜力由于它们在高温下的低机械性能、低抗蠕变性和降低的腐蚀行为（特别是在与其它金属材料的电接触中）而受到限制。实际的发展显示了通过使用现代合金和加工路线来改善这些性能的可能性。虽然铸造产品具有使用镁合金的大多数应用，但锻造镁的使用正在增加。因此，目前正在研究合金开发、原料控制和制造大规模挤压件或板材的合适工艺的开发。更好地了解加工路线和变形工艺对组织和性能的影响，必须与工艺和性能的模拟和建模相结合。与正在进行的铸造和锻造镁材料的研究有关，这些材料在单独使用或与其他金属材料电偶的情况下的腐蚀行为越来越受到关注。必须根据所选应用开发用于镁合金的新涂层系统，以增加镁在未来运输行业中的使用。这些工作还需要与镁合金与类似和不同金属和合金的连接新工艺相协调，以实现满足运输行业要求的广泛材料。

Besides advantages e.g. like superior specific strength and excellent processability the potential of magnesium alloys is limited due to their low mechanical properties at elevated temperature, low creep resistance, and reduced corrosion behaviour especially in galvanic contact with other metallic materials. Actual developments are showing the possibilities to improve these properties by using modern alloys and processing routes. While cast products are having a majority of applications using magnesium alloys, the use of wrought magnesium is increasing. Therefore alloy development, feedstock control and development of suitable processes for manufacturing large scale extrusions or sheets are under research at the moment. A better understanding of influence of processing routes and deformation processes on microstructure and properties has to be the scientific issue in combination with simulation and modelling of processes and properties. Connected to the ongoing research in cast and wrought magnesium materials the corrosion behaviour of these materials in standalone uses or in galvanic couples with other metallic materials are gaining an increasing interest. New coating systems in accordance to the chosen applications have to be developed for magnesium alloys to increase the use of magnesium in transportation industries in future. These works also need to be coordinated with new processes for joining magnesium alloys with similar and dissimilar metals and alloys to achieve a broad spectrum of materials that reach the requirements given by transportation industries.