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局部固化方法的使用对金属与金属粘合强度和耐久性的影响。拉夫堡大学的工作重点是使用先进技术表征合金微观结构和表面，并开发合适且新颖的表面预处理以提供优化的粘合。初始附着力水平和耐久性实验将使用从现有文献和拉夫堡研究中选出的合金和粘合剂进行。Constellium的含Cu合金与无Cu/低Cu市售6xxx合金（6008、6060、6082）的表面和近表面比较，包括确定预粘结处理前后合金微观结构和表面状况的影响;2.将粘合剂选择与应用类型联系起来的粘合剂向下选择，例如负载路径和所需的接头强度与其他要求，例如应用和成本;3.考虑局部联合养护策略;4.制定适当的联合测试策略。

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.