Cost-effective and Environmentally-friendly Manufacturing of Magnesium-based Hybrid Nanocomposite with High Engineering Performance for Next-Generation Automotive Applications

经济高效且环保地制造具有高工程性能的镁基混合纳米复合材料，用于下一代汽车应用

• 批准号: RGPIN-2017-04921
• 负责人: Hu, Hongfa
• 金额: $ 2.04万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=638209
• 关键词: Cost; effective; Environmentally; friendly; Manufacturing

Magnesium usage has significantly increased in vehicles for the past two decades due to its light weight in nature. From the viewpoint of engineering performance, magnesium alloys are not very competitive owing to their inferior mechanical and high-temperature and corrosion and wear properties in comparison with aluminum alloys and steels. Recent studies show that the addition of nanosize reinforcements enhances the mechanical properties without substantially affecting the plasticity of magnesium. However, applying the nanocomposites for real engineering applications, especially automotive components, is facing challenges and still in infancy because the high cost of nanoparticles and the complexity of experimental preparation processes make them less attractive to the highly competitive automotive industry than micro-size reinforcement and conventional approaches, i.e., stir casting and/or preform and squeeze casting. The overall objective of this research program is to develop cost-effective and environmentally-friendly manufacturing processes for fabrication of magnesium-based hybrid nanocomposite (MHNC) with high engineering performance in order for the automotive industry to make full use of their unique properties in next-generation structural and powertrain applications, which not only suffer high cyclic mechanical loading but also need to sustain harsh and corrosive environment during service. In the proposed program, two intertwined streams are planned. The first involves the fabrication of MHNCs by developing preform-squeeze casting technologies with appropriate selection of micron and nano-size reinforcements, and a comprehensive evaluation of processing-structure-property relationships. A second stream within this program of research will seek to exploit the advantages of the Plasma Electrolytic Oxidation (PEO) process and apply it to the magnesium-based hybrid composites for anti-corrosion and wear protection.

由于其重量轻，过去二十年来，镁在车辆中的使用量显着增加。从工程性能的角度来看，镁合金的机械性能、高温性能以及腐蚀磨损性能与铝合金和钢相比，竞争力不强。最近的研究表明，添加纳米级增强材料可以增强机械性能，而不会显着影响镁的塑性。然而，将纳米复合材料应用于实际工程应用，特别是汽车零部件，面临着挑战，并且仍处于起步阶段，因为纳米粒子的高成本和实验制备过程的复杂性使得它们对竞争激烈的汽车行业的吸引力不如微米级增强材料和纳米材料。传统方法，即搅拌铸造和/或预成型件和挤压铸造。该研究项目的总体目标是开发具有成本效益且环保的制造工艺，用于制造具有高工程性能的镁基杂化纳米复合材料（MHNC），以便汽车行业在未来的汽车工业中充分利用其独特的性能。 -一代结构和动力总成应用，不仅承受高循环机械载荷，而且在使用过程中还需要承受恶劣和腐蚀的环境。在拟议的计划中，计划了两个相互交织的流。第一个涉及通过开发预成型挤压铸造技术来制造 MHNC，并适当选择微米和纳米尺寸的增强材料，并对加工-结构-性能关系进行综合评估。该研究计划的第二部分将寻求利用等离子电解氧化（PEO）工艺的优势，并将其应用于镁基混合复合材料，以实现防腐和磨损保护。