Synergetic interactions between metal powder tailoring, additive manufacturing and heat treatment

金属粉末定制、增材制造和热处理之间的协同相互作用

• 批准号: RGPIN-2019-05296
• 负责人: Brochu, Mathieu
• 金额: $ 5.54万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=761079
• 关键词: Synergetic; interactions; between; metal; powder

Prof. Brochu has focused his entire research career on the synergic and integrative multi-disciplinary optimisation linking powder metallurgy, rapid solidification welding and additive manufacturing to democratise advanced materials and manufacturing processes. To realise Prof. Brochu's long term research vision, this current DG proposal involves integrating, solving and optimizing the fundamental competitive interactions between the starting materials, alloy composition and its solidification, processing strategies and post-processing heat treatments. The innovative research program was designed to encompass four short term objectives: (1) Linking powder passivation and surface quality to their melting/sintering behavior, in order to address the knowledge gap corresponding to the variability in powder surface properties that is ultimately one of the causes for defect development during AM. (2) High strength AM alloys, in order to develop new AM-designed self-healing alloys that will increase the currently restraint AM materials offering. (3) LPBF of parts with controlled crystallographic orientation, in order to provide a faster and lower-cost alternative route to manufacture directionally solidified or single crystal components, transformative for the aerospace industry. (4) Linking post-AM thermal processes to deleterious microstructure development, in order to develop new heat treatments adapted to the AM microstructure to prevent the development of the deleterious phases negatively impacting the cyclic mechanical properties. The DG program plans to train 3PDFs, 3 PhDs and 2 MEngs students that will gain synergetic and multi-disciplinary skills encompassing experimentation, coding and modeling. Specifically, cutting edge knowledge and critical skills related to the surface characterisation, optimisation of AM protocols, materials characterisation, modeling of solidification orientation and solid-state phase transformation will be gained by the different HQPs. The DG program, resulting in a highly skilled and knowledgeabled workforce, will transform several fields including metal powder manufacturing, AM printing bureau, original equipment manufacturers, maintenance, repair and overhaul companies, heat treatment-specialised companies, etc. McGill, located in Montreal, is central to these industrial sectors contributing to the aerospace cluster and related supply chain.

Brochu 教授的整个研究生涯专注于将粉末冶金、快速凝固焊接和增材制造联系起来的协同和综合多学科优化，以实现先进材料和制造工艺的民主化。为了实现 Brochu 教授的长期研究愿景，目前的 DG 提案涉及整合、解决和优化起始材料、合金成分及其凝固、加工策略和后加工热处理之间的基本竞争相互作用。 该创新研究计划旨在涵盖四个短期目标：（1）将粉末钝化和表面质量与其熔化/烧结行为联系起来，以解决与粉末表面特性的可变性相对应的知识差距，而粉末表面特性的可变性最终是粉末表面特性的可变性之一。增材制造过程中缺陷形成的原因。 (2) 高强度增材制造合金，以开发新的增材制造设计的自修复合金，这将增加目前约束增材制造材料的供应。 (3) 具有受控晶体取向的零件的LPBF，以便提供更快、更低成本的替代途径来制造定向凝固或单晶零件，为航空航天业带来变革。 (4) 将增材制造后热处理与有害微观结构的发展联系起来，以开发适合增材制造微观结构的新热处理，以防止有害相的发展对循环机械性能产生负面影响。 DG 计划计划培训 3PDF、3 名博士和 2 名工程硕士学生，他们将获得包括实验、编码和建模在内的协同和多学科技能。具体而言，不同的 HQP 将获得与表面表征、增材制造协议优化、材料表征、凝固方向建模和固态相变相关的尖端知识和关键技能。 DG 计划将培养高技能、知识丰富的劳动力队伍，将改变多个领域，包括金属粉末制造、增材制造印刷局、原始设备制造商、维护、修理和大修公司、热处理专业公司等。 麦吉尔，位于蒙特利尔，是这些为航空航天集群和相关供应链做出贡献的工业部门的核心。