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DUCTILITY AND STRENGTH IN ALUMINIUM HIGH PRESSUREDIE CASTING ALLOYS FOR THE AUTOMOTIVE INDUSTRY

机译：汽车行业用铝合金高压铸造合金的延性和强度

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Today the die casting process is used to produce parts with high quality requirementsrnsuch as engine cradles, suspension cross members and structural nodes for spacernframe and subframe designs in passenger cars. This has presented the challenge torndesign alloys with superior mechanical properties. For crash relevant parts requiring highrnductility (elongation > 10 %) one option to meet these properties is by heat treating a lowrniron Al-Si alloy to a T4 or T7 temper. However heat treatment can lead to part distortionrnand blistering resulting in higher costs for the producer. The second option is Al-Mgrnalloys type which fulfill these requirements in the as-cast state but the alloys are not easyrnto cast. Research was started using the easy to cast Al-Si alloy system targeting a highrnelongation (> 10 %) and a medium yield-strength (> 120 Mpa) already in temper F andrnnot showing any long term aging behavior. This paper will discuss the technical progressrnwhich began in the early 1990ies, gaining in importance with the first series space framernAluminum car, continuing with structural parts applied in the as cast state andrnapproaching a future with an increasing amount of light weight components replacingrnsteel and heat treated Aluminum designs.
机译：如今，压铸工艺已用于生产对质量有要求的零件，例如发动机支架，悬架横梁和乘用车的车架和副车架设计的结构节点。这就提出了具有优良机械性能的可撕裂设计合金的挑战。对于需要高延展性（伸长率> 10％）的与碰撞相关的零件，满足这些性能的一种选择是通过将低铁Al-Si合金热处理到T4或T7态。但是，热处理会导致零件变形和起泡，从而给生产商带来更高的成本。第二种选择是Al-Mgrnalloys型，可以在铸态下满足这些要求，但合金不易铸造。使用易于铸造的Al-Si合金系统开始研究，该系统的目标是在高温F下具有较高的伸长率（> 10％）和中等的屈服强度（> 120 Mpa），并且没有表现出任何长期的时效行为。本文将讨论始于1990年代初期的技术进步，以及对于第一个系列空间框架铝制汽车的重要性，以及继续以铸造状态应用的结构部件，以及随着越来越多的轻量化部件替代钢和热处理铝而接近未来的情况。设计。

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