Characterization and optimization of extrusions welded by the friction stir welding process

搅拌摩擦焊工艺焊接挤压件的表征和优化

• 批准号: 536935-2018
• 负责人: Marin, Gheorghe
• 金额: $ 1.81万
• 依托单位: Cégep de Trois-Rivières
• 依托单位国家: 加拿大
• 项目类别: Applied Research and Development Grants - Level 1
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=658787
• 关键词: Characterization; optimization; extrusions; welded; friction

Aluminium structures are rapidly gaining popularity in civil and mechanical engineering applications. Roofs, bridges and trailers are all examples of products that benefit from the corrosion resistance and lightness of aluminium. Lots of these structures are made using extrusions that are welded together to form panels. However, traditional welding methods lead to lower mechanical properties in the welded joints and in the thermally affected zone (TAZ). Friction stir welding is a solid-state welding method that produces joints with less decrease in mechanical properties, but the joint design has to be carefully selected in order to obtain sound welds. The aim of this project is to characterize friction stir welded joints between aluminium extrusions, and then to optimize the shape of the extrusions using modelling and experiments. This will allow our industrial partner to assess the potential performance of friction stir welded extrusions for the manufacturing of structural panels and to gain important know-how about the design of extrusion suitable for friction stir welding.**

铝结构在土木和机械工程应用中迅速普及。屋顶、桥梁和拖车都是受益于铝的耐腐蚀性和轻质性的产品。许多这样的结构是使用焊接在一起形成面板的挤压件制成的。然而，传统的焊接方法导致焊接接头和热影响区（TAZ）的机械性能较低。搅拌摩擦焊是一种固态焊接方法，其产生的接头机械性能降低较少，但接头设计必须仔细选择，以获得良好的焊缝。该项目的目的是表征铝挤压件之间的搅拌摩擦焊接接头，然后使用建模和实验来优化挤压件的形状。这将使我们的工业合作伙伴能够评估用于制造结构板的搅拌摩擦焊接挤压件的潜在性能，并获得有关适用于搅拌摩擦焊接的挤压件设计的重要专业知识。**