Fundamentals of Interfacial Tribology and Applications to Manufacturing Processes

加拿大制造业的生产率、产品质量和环境可持续性与其在新材料开发和使用高效制造工艺方面保持领先的能力密切相关。刀具磨损、积边形成和粘合是影响加工或成形零件的制造过程效率和表面质量的因素之一。在制造过程的每个阶段控制材料的微观结构也很重要，因为通常是近表面区域的微观结构决定了产品的可制造性性能。*拟议的计划旨在开发新的摩擦学方法，以提高制造过程的效率，特别是轻质合金制造的工程部件的加工和成形。将要研究的材料系统将由铝和镁合金组成，这对注重燃油经济性的运输部门至关重要。将通过进行实验和计算研究来研究表面和界面损伤机制的微观结构方面。这项研究将由两个相关项目组成：*《金属板材成形摩擦学》项目，该项目将描述铝、镁合金板材与模具表面之间的摩擦系数和接触损伤机制，以提高它们的成形性和表面质量。*《机械加工摩擦学》项目将侧重于提高通常受到材料粘结阻碍的轻金属铸件的切割和钻孔作业的效率。*这两个计划都有独特的研究要求，但基本问题是相似的，可以使用共同的研究方法来解决，这些方法将包括：*i)开发新的测试方法，以模拟在制造条件下发生的界面摩擦化学失效机制；*ii)从微观结构和原子角度描述磨损、粘合和摩擦机制；*iii)界面设计--使用新型涂层、固体润滑剂和纹理表面--利用实验和计算工作的结果，提高轻质板材的成形性和加工过程的有效性。*总而言之，该研究计划将产生基本的科学和工程知识，以生产新的节能制造技术，并提高轻量化部件的质量。该研究提案旨在提供尽可能高的HQP产出，这些HQP将利用新技术，并增强加拿大在全球经济中的竞争能力。**************

The productivity, product quality, and environmental sustainability of Canada's manufacturing sectors are closely linked to their ability to remain at the forefront of new material development and the use of efficient manufacturing processes. Tool wear, built up edge formation, and adhesion are among the factors that influence a manufacturing process's efficiency and surface quality of the machined or formed part. It is also important to control of a material's microstructure at each stage in the manufacturing process as it is often the microstructure of the near surface region that dictates the product's manufacturability performance. *** The proposed program aims at developing new tribological methods that will increase efficiency of manufacturing processes, particularly machining and forming of engineering components made of lightweight alloys. The material systems that will be studied will consist of Al and Mg alloys that are of critical importance for fuel economy conscious transportation sectors. The microstructural aspects of surface and interface damage mechanisms will be examined by undertaking experimental and computational studies. The research will consist of two related programs: *** A 'Tribology of Sheet Metal Forming' program that will delineate coefficients of friction and contact damage mechanisms between Al, and Mg alloy sheets and die surfaces in order to increase their formability and surface quality.*** A Tribology of Machining' program that will focus on improving the efficiency of cutting and drilling operations of light metal castings typically hindered by material adhesion. *** *Each of these two programs has unique research requirements, yet the fundamental issues are similar and can be addressed using a common research methodology that will include:***i) the development of new testing methods to simulate interfacial tribo-chemical failure mechanisms that occur during manufacturing conditions; ***ii) the delineation of wear, adhesion and friction mechanisms from microstructural and atomistic points of view;***iii) the design of interfaces-- using new coatings, solid lubricants, textured surfaces-- to increase formability of lightweight sheet metals and effectiveness of machining processes using the results of experimental and computational work. *** In summary, the research program will generate fundamental scientific and engineering knowledge to produce new energy efficient manufacturing technologies and improve quality of lightweight components. The research proposal is structured to provide the highest possible output of HQP who will utilize the new technology and enhance Canada's ability to compete in the global economy. **************