Optimised Adhesive Bonded Joints in 6xxx Aluminium Alloys for EV applications

该项目的目的是了解表面处理，合金成分和微观结构，以及使用局部固化方法对金属对金属粘合剂结合强度和耐久性的影响。拉夫堡大学的工作将集中在使用先进技术表征合金的微观结构和表面，并开发合适和新颖的表面预处理，以提供优化的结合。最初的粘附水平和耐久性实验将使用合金和粘合剂进行，这些合金和粘合剂是从拉夫堡的现有文献和研究中选择的。这项工作将包括以下内容：1 . Constellium含cu合金与市售的无cu /低cu 6xxx合金（6008、6060、6082）的表面和近表面比较，包括测定预粘接处理前后合金组织和表面状况的影响；2 .粘合剂向下选择，将粘合剂选择与应用类型联系起来，例如负载路径和所需的接头强度与应用和成本等其他要求；3 .局部接缝养护策略的考虑；制定合适的联合测试策略。

The aim of the project is to understand the effect of the surface treatment, alloy composition and microstructure, and use of local curing methods on metal-to-metal adhesive bond strength and durability.Work at Loughborough University will focus on characterisation of the alloy microstructure and surfaces using advanced techniques and the development of suitable and novel surface pre-treatments to provide optimised bonding. Both initial adhesion levels and durability experiments will be carried out using alloys and adhesives downselected from the available literature and studies at Loughborough.The work will include the following:1. Surface and near-surface comparison of Constellium's Cu-containing alloys with Cu-free/low-Cu commercially available 6xxx alloys (6008, 6060, 6082) including the determination of the effect of alloy microstructure and surface condition before and after prebond processing;2. Adhesive downselection that link the adhesive selection to the type of application, e.g. load path and required joint strength vs. other requirements such as application and cost;3. Consideration of the local joint curing strategy, and;4. Development of a suitable joint test strategy.