Development, processing and applications range of magnesium lithium alloys
Development, processing and applications range of magnesium lithium alloys
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DOI：
10.4028/www.scientific.net/msf.350-351.31
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发表时间：
2000-01-01
期刊：
影响因子：
--
通讯作者：
Kaese, V
中科院分区：
文献类型：
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作者：
Haferkamp, H;Niemeyer, M;Kaese, V
在轻金属合金中，镁是最轻的结构材料，密度为1.74 g/cm(3)，具有许多吸引人的物理和机械性能以及加工优势。因此，它代表了一种非常有吸引力的材料，从主要用户汽车工业到其他工业领域，如体育、机器人和电子工业，都有大量的应用。但是镁合金在更复杂的应用中的使用受到延展性、耐腐蚀性和抗蠕变性能不足的限制。此外，；镁合金导致污染的趋势增加。在这方面，本文论述了镁合金开发和铸造的一些一般问题。以及其他一些镁合金的生产技术，具有改进的性能和几种应用。重点是新型镁锂合金系统，具有较低的密度，提高了延展性和耐腐蚀性。冶金加工的基本组成部分是采用通用、适应性强的组件模块化设计的适镁炉系统；并采用自动压力计量技术。它的使用范围很广。各种铸造工艺有冷态铸造、冷室压铸、连铸、破模铸造等。进一步的应用是快速凝固技术。在粉末冶金和喷射铸造中，产生了一种相分布均匀的微观组织。在代表性加工技术的基础上，将展示密度更低、延展性更好、耐腐蚀性能更好的新型镁合金体系。镁合金的一个特殊特性是它们在医学领域的应用，它们被用作外科手术的植入材料。
Among the light metal alloys, magnesium is the lightest structural material with a density of 1.74 g/cm(3) and many attractive physical and mechanical properties combined with processing advantages. Therefore, it represents a very attractive material for a large amount of applications from main user automotive industry up to other industry fields like sport, robotic and electronic industry. But the usage of magnesium alloys in more,complex applications:is limited by insufficient properties regarding the ductility, corrosion and creep resistance. Additionally, the high reactivity of; magnesium alloys leads:to an increased tendency of contamination. In this regard, the paper deals with some general aspects of magnesium alloy development and casting. as well as some other production technologies for magnesium alloys with improved properties and for several applications. An emphasis is put on new magnesium-lithium alloy systems-with lower density, improved ductility and corrosion resistance.The basic component of metallurgical processing is a magnesium-suitable furnace system which is designed modularly with universal, adaptable components; and automatic pressure metering technology. It is used in a wide range. of casting processes like-chill casting, cold chamber die casting, continuous casting, and break-mould, casting. Further applications are methods of rapid solidification technology. In the powder metallurgy and spray casting a microstructure with fine and: homogenous phase distribution is generated. Based on the represented processing:technology new magnesium alloy systems with lower density, improved ductility and corrosion resistance will be shown. A special peculiarity of magnesium alloys is their application in the medicine sector where they are used as implant materials for surgery.