Laser Powder-Bed Fusion of Aluminum-Scandium (Al-Sc) Alloys

铝钪 (Al-Sc) 合金的激光粉床熔融

• 批准号: 561019-2020
• 负责人: Elbestawi, Mohamed
• 金额: $ 2.19万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 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=706987
• 关键词: Laser; Powder; Bed; Fusion; Aluminum

The objective of the proposed research project is to identify the process-structure-property relationships for laser powder-bed fusion of various Aluminum-Scandium (Al-Sc) alloys. Scandium (Sc), a rare earth element, is one of the most effective microalloying elements to strengthen Al alloys. It imparts increased strength and desirable properties to aluminum. Scandium additions generate strength by promoting a smaller, homogenous grain structure in alloys during solidification. Very small quantities of Scandium (between 0.05% and 0.5% Sc) are usually added to aluminum for better strength response. The main goal of this project is to design and manufacture a new Al-Sc alloy with an enhanced strength-to-weight ratio for use by the Canadian automotive and aerospace industries. The mechanical properties of Al-Sc parts produced using laser additive manufacturing need to be known for the automotive and aerospace industries. This project is a collaborative effort between McMaster's Additive Manufacturing Group and Imperial Mining Group Ltd. (Imperial). The long-term impact of this project is the development of additional capacity to manufacture automotive and aerospace components in Canada using additive manufacturing of Al-Sc alloy.

拟议研究项目的目标是确定各种铝钪（Al-Sc）合金激光粉末床熔合的工艺-结构-性能关系。钪（Sc）是一种稀土元素，是强化铝合金最有效的微合金元素之一。它赋予铝更高的强度和所需的性能。钪的添加通过在凝固过程中促进合金中更小、更均匀的晶粒结构来产生强度。通常在铝中添加极少量的钪（0.05% 至 0.5% Sc）以获得更好的强度响应。该项目的主要目标是设计和制造一种强度重量比更高的新型铝钪合金，供加拿大汽车和航空航天工业使用。汽车和航空航天工业需要了解使用激光增材制造生产的 Al-Sc 零件的机械性能。该项目是麦克马斯特增材制造集团和帝国矿业集团有限公司（帝国）之间的合作成果。该项目的长期影响是开发加拿大利用 Al-Sc 合金增材制造制造汽车和航空航天零部件的额外能力。