汽车铝合金车身板材的研究现状及发展趋势

综述了国内外汽车铝合金2000、5000和6000系车身板的研究进程、应用现状及发展前景，指出了新型Al-Mg-Si基合合金今后汽车车身板研究应用的一个重点，它具有强度和塑性的良好组合，耐蚀性优良，易着色等优点，此外，还列出了汽车铝合金车身板研究应用中存在的成本高和成型性差等问题，提出了我国开发高性能且有特色的汽车铝合金车身板材的研究方向。

The Progress and Prospect of Research on Aluminium Alloys for Auto Body Sheets

In recent years, with the development of society and advancement of technology, aluminium and aluminium alloys are used more and more widely. It becomes a trend that traditional steel sheets are replaced by aluminium sheets for auto body. The research progress, application status and development prospect of aluminium alloys for auto body sheets are summarized in this paper. Among the 2000, 5000 and 6000 series aluminium alloys now studied, the new style 6000 series Al Mg Si based alloy is specially introduced as a emphasis in future research. There are many advantages about it: proper strength and plasticity, good corrosion resistance performance, easy coloring and effect of painting strengthening. Besides, some problems such as high cost and poor formation performance, which hold up the application of aluminium alloys for auto body sheets, are listed. At last, several advices are presented to develop characteristic aluminium alloys of high properties for auto body sheets in China. For instance, the stamping property should be improved by designing the compostition and technology and the relationship of stamping property, mechanical properties, composition and technology should be made clear, the material composition and technology can be designed by using computer techniques such as artificial neural network and genetic algorithm.