Optimum design of fatigue-critical automotive components made of magnesium alloys

为了应对燃料消耗和温室气体排放方面即将发生的环境法规变化，全球汽车行业通过在车辆制造中广泛采用轻质材料，在汽车结构领域发生了革命性变化。 镁作为最轻的工业金属，近年来作为钢和铝的潜在替代品在轻量化研究中发挥了核心作用。随着汽车设计理念中出现的多材料汽车架构概念，镁等超轻材料应用于性能最佳的结构部件。 变形镁合金具有优异的疲劳性能，因此是设计和制造疲劳临界汽车部件的可行候选材料，这些部件的疲劳强度是其关键性能指标。

In response to impending environmental regulation changes in fuel consumption and greenhouse gas emission, the global automotive sector has undergone revolutionary changes in the area of automotive structures through the widespread adoption of lightweight materials in the manufacture of vehicles. Magnesium, as the lightest commercial metal, has recently played a central role in light weighting research as potential substitute for steel and aluminum. With the multi-material vehicle architecture concept emerging in automotive design philosophy, ultra-light materials like magnesium should be used in the structural parts for which they perform best. Wrought magnesium alloys have shown excellent fatigue performance and hence are viable candidates for the design and manufacture of fatigue-critical automotive components, components with fatigue strength as their key performance indicator.