Processing and Properties of Recycled Aluminum Alloys

再生铝合金的加工及性能

• 批准号: RGPIN-2018-04377
• 负责人: Wells, Mary
• 金额: $ 2.84万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=712844
• 关键词: Processing; Properties; Recycled; Aluminum; Alloys

The metallurgical industry is in the midst of a significant shift with the use of lightweight materials such as aluminum at the forefront of transportation design considerations to improve fuel economy. As manufacturers rush to adapt to stricter emissions standards, forecasters project double digit demand growth for aluminum automotive applications over the next decade. The use of recycled aluminum products in lightweight automotive vehicles results in energy savings of 95% compared to the use of products produced from primary aluminum and hence from an energy perspective there are huge incentives to using recycled aluminum products. The focus of my research continues to be the intersection between advanced lightweight metallic materials and manufacturing and ways to improve both manufacturability of these alloys but also the effect of manufacturing on their final mechanical properties. Within this realm, a key area that has received almost no attention is the impact of using recycled aluminum on the manufacturability and formability of aluminum alloys. The overall objective of this research is to develop scientific understanding of the impact of increased levels of specific elements (Fe, Mn, Cr and Cu), that can accumulate due to recycling, on the microstructure evolution during processing of AA6xxx aluminum products and their final properties. Currently almost no information exists on the role that element changes associated with recycling has on manufacturability and final alloy properties for wrought aluminum alloys. This research could ultimately be used to design manufacturing routes and products which help to mitigate any detrimental impacts as well as maximize any benefits when using recycled aluminum. Recycled aluminum is different from its primary parent sheet as there is an unavoidable accumulation of certain elements during recycling due to the manner in which the material is processed and prepared. These elements include iron (Fe), silicon (Si) and manganese (Mn) which are typically found in the primary metal, but can also include other elements such as copper (Cu) which is one of the alloying elements in several commercial alloys within the AA6xxx alloy family, as well as, vanadium (V), zinc (Zn), nickel (Ni), chromium (Cr) and lead (Pb) which may also enter into the aluminum processing stream. The starting composition of the aluminum directly affects the elements in solid solution as well as the particles that form in the aluminum matrix during casting and further processing. This research will provide a unique and valuable opportunity for research students to develop skills in materials manufacturing and characterization and understand the role that recycling can play in the reuse of materials.

冶金工业正处于使用轻巧的材料（例如铝制在运输设计考虑方面的最前沿）以改善燃油经济性的重大转变。随着制造商急于适应更严格的排放标准，预报项目项目在未来十年内铝制汽车应用的双位需求增长。与使用原代铝生产的产品相比，在轻型汽车车辆中使用回收的铝产品可节省95％，因此从能量的角度来看，使用可回收的铝产品有巨大的激励措施。 我的研究的重点仍然是先进的轻质金属材料与制造业之间的交集，以及改善这些合金的两种生产性，以及制造对其最终机械性能的影响。在这个领域中，几乎没有关注的关键区域是使用回收铝对铝合金的可制造性和可配合性的影响。这项研究的总体目的是发展科学理解特定元素（Fe，Mn，Cr和Cu）的影响，这些元素可以由于回收，对AA6XXX铝产品的处理过程中的微观结构演变而产生的影响。目前，几乎没有关于与回收相关的元素变化在生产性和制造铝合金最终合金特性中的作用的信息。这项研究最终可用于设计制造路线和产品，以帮助减轻任何有害影响，并在使用回收铝时最大程度地利用任何好处。 回收铝与其主要母体不同，因为由于材料的处理和制备方式，在回收过程中不可避免地积累了某些元素。这些元素包括铁（Fe），硅（SI）和锰（MN），通常在主要金属中找到，但还可以包括其他元素，例如铜（CU），这是AA6XXXX合金家族中几种合金合金的铜（CU），以及Zinc（V），Ziniuiuiuiuiuia（pb），Zn和Chrom（Zn），ni（ni），ni（ni），ni（ni），ni（ni），ni（ni）（ni）进入铝处理流。铝的起始组成直接影响固体溶液中的元素以及在铸造和进一步加工过程中铝基质中形成的颗粒。 这项研究将为研究学生提供一个独特而宝贵的机会，以发展材料制造和表征的技能，并了解回收在材料重复使用中可以发挥的作用。