SPP 1168: Extending the Range of Applications for Magnesium Alloys

SPP 1168：扩大镁合金的应用范围

• 批准号: 5472096
• 金额: --
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2004
• 资助国家: 德国
• 起止时间: 2003-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5472096?language=en
• 关键词: SPP; 1168; Extending; Range; Applications

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.

除了优点之外，例如尽管镁合金具有优异的比强度和优异的加工性能，但由于其高温机械性能低、抗蠕变性低以及腐蚀行为减少（尤其是在与其他金属材料电接触时），镁合金的潜力受到限制。实际的发展表明通过使用现代合金和加工路线来改善这些性能的可能性。虽然铸造产品的大部分应用都使用镁合金，但锻造镁的使用正在增加。因此，目前正在研究合金开发、原料控制以及制造大型挤压材或板材的合适工艺的开发。更好地理解加工路线和变形过程对微观结构和性能的影响必须是与过程和性能的模拟和建模相结合的科学问题。与铸造和锻造镁材料的持续研究相关，这些材料在单独使用或与其他金属材料电偶结合时的腐蚀行为越来越受到人们的关注。必须根据所选应用为镁合金开发新的涂层系统，以增加未来交通运输行业中镁的使用。这些工作还需要与将镁合金与相似和异种金属和合金连接的新工艺相协调，以获得满足运输行业要求的广泛材料。