Optimization of the manufacturing sequence in Al-Li alloy systems used in the aerospace industry

航空航天工业用铝锂合金系统制造顺序的优化

• 批准号: 365155-2008
• 负责人: Brochu, Mathieu
• 金额: $ 11.36万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=460913
• 关键词: Optimization; manufacturing; sequence; Al; Li

The Canadian Road Map on Transformation Technology of Aluminum 2006 revealed that in order for aluminum to maintain its strategic position as a material of choice in all industries like the transportation industry, significant progress must be made in the development of high-strength, high-stiffness aluminium alloys and the development of cheaper processes for the transformation of Al. For the aerospace industry, this statement is critical since Al is facing competition from carbon-based composites. Alcoa, which is the major manufacturer of aerospace Al alloy grades, is well engaged in taking up this challenge and has recently developed a third generation of Al-Li alloys. However, the state of the art in alloy development requires optimization of the processing conditions, which is far from being achieved for these new alloys. This research proposal is to study three manufacturing processes: extrusion, friction-stir welding and freeforming, as well as studying processing variables for property improvement of two Al-Li alloys, namely 2099 and 2199. The know-how for these three processes was identified by Alcoa as critical prior to the alloy's utilization in aircraft components. This project is a joint effort by researchers from McGill and Laval University, two of the institutional members of REGAL and Alcoa.

2006年加拿大铝转型技术路线图显示，为了使铝保持其作为交通运输业等所有行业首选材料的战略地位，必须在高强度、高刚度铝合金的开发以及更便宜的铝转型工艺的开发方面取得重大进展。对于航空航天业来说，这一说法至关重要，因为铝面临着碳基复合材料的竞争。美铝公司是航空航天铝合金牌号的主要制造商，积极应对这一挑战，最近开发了第三代铝锂合金。然而，合金开发的最新技术需要优化加工条件，而这些新合金还远未实现这一目标。该研究计划旨在研究三种制造工艺：挤压、搅拌摩擦焊和自由成型，以及研究改善两种铝锂合金（即 2099 和 2199）性能的加工变量。美铝公司认为，这三种工艺的专业知识在该合金用于飞机部件之前至关重要。该项目是 REGAL 和 Alcoa 的两个机构成员麦吉尔大学和拉瓦尔大学的研究人员的共同努力。