Surface roughening behavior of Al-Mg alloys during deformation

铝镁合金变形过程中的表面粗化行为

• 批准号: 5682-2006
• 负责人: Yannacopoulos, Spiro
• 金额: $ 1.78万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=364248
• 关键词: Surface; roughening; behavior; Al; Mg

Since the 1970's when the energy crisis became apparent, automobile manufacturers have been trying to reduce the fuel consumption of automobiles using various ways such as increasing the efficiency of engines and other components.  The recent worldwide effort to reduce environmental emissions, as prescribed in the Kyoto Accord, has made this effort more intense.  In addition, technological developments in the area of materials, have enabled automobile designers and producers to incorporate light-weight materials such as plastics and metals other than steel in several automobile components.  Recently, the possibility of employing aluminum alloys in automobile bodies widely has been introduced and aluminum producers and researchers are making efforts to develop new technologies which would make this major material substitution possible.  The present proposed research project deals with examining the variables involved with forming and heat treating a paintable aluminum automobile panel.  The aluminum alloys under consideration obtain their strength through a combination of chemical composition and heat treatment.  However, the forming processes associated with the manufacturing of these panels affect the strength of the material as does the paint-baking process.  Since appearance is also very important in this application, the corrosion behaviour characteristics and the resulting surface finish of these aluminum alloys must be established.  The proposed project will examine the corrosion behaviour of the aluminum alloys and the surface finish resulting from the manufacturing process used under consideration in detail.  More specifically, the effect of chemical composition on the corrosion resistance and the effect of surface preparation on the final finish will be established.  The results of this investigation are of interest to Alcan, a major Canadian producer of aluminum alloys, and should increase Canada's competitiveness in the global market.

自20世纪70年代能源危机变得明显以来，汽车制造商一直在尝试使用各种方法来降低汽车的燃料消耗，例如提高发动机和其他部件的效率。最近，如京都雅阁所规定的，全球范围内减少环境排放的努力使这种努力更加强烈。此外，材料领域的技术发展，已经使得汽车设计者和生产者能够在几个汽车部件中结合诸如塑料和金属而不是钢的轻质材料。最近，铝合金在汽车车身中广泛应用的可能性已经被介绍，铝生产商和研究人员正在努力开发新技术，使这种主要材料的替代成为可能。论述了可涂漆的汽车铝合金板的成形和热处理过程中涉及的变量。所考虑的铝合金通过化学成分和热处理的组合获得其强度。然而，与这些板的制造相关的成形工艺和烤漆工艺一样影响材料的强度。由于外观在这种应用中也非常重要，必须确定这些铝合金的腐蚀行为特征和由此产生的表面光洁度。拟议项目将详细检查铝合金的腐蚀行为和所考虑的制造工艺产生的表面光洁度。更具体地说，将确定化学成分对耐腐蚀性的影响以及表面处理对最终光洁度的影响。加拿大铝业公司是加拿大主要的铝合金生产商，该调查对加拿大铝业公司很有意义，并将提高加拿大在全球市场上的竞争力。