Accelerated development of aluminum alloys for additive manufacturing

加速开发用于增材制造的铝合金

• 批准号: RGPIN-2020-03868
• 负责人: Bishop, Donald
• 金额: $ 3.35万
• 依托单位: Dalhousie University
• 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=716030
• 关键词: Accelerated; development; aluminum; alloys; additive

Additive manufacturing (AM), a.k.a. 3D printing, refers to technologies that convert a computer aided drawing directly into a finished product in a layer-by-layer fashion; commonly, this involves a powdered feed stock that is consolidated with the aid of a laser. Viewed by many as technology that will soon disrupt the entire manufacturing enterprise, valuation of the global market for AM products is soaring upward with the annual economic impact of AM expected to surpass $250B by 2025. As a pioneering force in AM of metallic products, Canada is poised to be one of the major benefactors of this growth such that our national AM market will mature to $14B/yr over this same time frame. Confidence in such predictions is certainly warranted as Canada's influence on AM continues to expand aggressively. For instance, it is now home to a series of leading metal powder producers, AM equipment manufacturers, firms that are commercially producing metallic products via AM, and a growing list of world-class AM research facilities. To fully capitalize on Canada's momentum in AM and maximize national capacity to exploit the opportunities that exist, research is needed on several fronts. Of these, alloy development is exceptionally critical and timely. For instance, in the case of aluminum AM, only a single alloy (AlSi10Mg) has achieved ASTM recognition yet mature aluminum forming technologies (wrought, cast) can access over 600. HQP shall strive to address this technology gap by developing advanced aluminum alloys for AM in an accelerated fashion. Here, HQP will be empowered with the capacity to complete hands-on experiments at all stages of production - powder fabrication (gas atomization), powder consolidation (laser powder bed fusion (L-PBF), laser directed energy deposition (L-DED)), post-AM processing, and material characterization. The pace of alloy discovery will be intensified by utilizing a combinatorial-type of approach that leverages the capacity of the L-DED to produce numerous test specimens with unique chemistries under wide ranges of process parameters in a single build cycle. HQP shall also investigate a fundamental constraint that has dampened industry uptake of aluminum AM (heightened laser reflectivity). Dr. Bishop is very well versed in the development and commercialization of innovative aluminum powders for the related field of powder metallurgy (PM). Several of the outcomes patented by his team are now exploited in the industrial fabrication of a growing number of ground-breaking automotive components. Two of these have received prolific industry awards, ushered in completely new forums of growth for the PM sector, and facilitated tangible reductions in greenhouse gas emissions. Coupling his comprehensive experience with aluminum powders together with his recent launch of a new facility for AM research, he is in an excellent position to now develop and commercialize innovative aluminum powders for his latest challenge - the AM sector.

添加剂制造（AM），又称3D打印，是指以逐层方式将计算机辅助图直接转换为成品的技术；通常，这涉及粉末状的饲料汤，该饲料借助激光巩固。 Viewed by many as technology that will soon disrupt the entire manufacturing enterprise, valuation of the global market for AM products is soaring upward with the annual economic impact of AM expected to surpass $250B by 2025. As a pioneering force in AM of metallic products, Canada is poised to be one of the major benefactors of this growth such that our national AM market will mature to $14B/yr over this same time frame.当加拿大对AM的影响力继续积极扩大，对这种预测的信心肯定是必要的。例如，它现在是一系列领先的金属粉末生产商，AM设备制造商，通过AM商业生产金属产品的公司以及越来越多的世界一流AM研究设施清单。 为了充分利用加拿大在AM中的势头，并最大程度地利用了国家利用现有机会的能力，需要在几个方面进行研究。其中，合金开发非常关键和及时。例如，就铝AM而言，只有一种合金（ALSI10MG）获得了ASTM识别，但成熟的铝制成型技术（Wargiew，Cast）才能访问600多个。HQP应努力通过在加速方式中为AM开发高级铝合金来解决这一技术差距。在这里，HQP将具有在生产的所有阶段完成动手实验的能力 - 粉末制造（气雾化），粉末固结（激光粉末床融合（L-PBF），激光定向能量沉积（L-DED），后AM加工后处理和材料表征。合金发现的速度将通过利用方法组合型的方法来加强，该方法型的方法利用L-DED的能力在单个构建周期内在宽的过程参数下产生众多具有独特化学物质的测试样品。 HQP还应调查一种基本的约束，该约束抑制了铝AM的行业吸收（激光反射率提高）。 Bishop博士非常精通用于粉末冶金（PM）相关领域的创新铝粉的开发和商业化。现在，他的团队获得的几项成果在工业制造中被剥夺了越来越多的开创性汽车组件。其中两个获得了多元化的行业奖项，并为PM领域的全新增长论坛提供了新的奖项，并促进了温室气体排放的切实减少。 将他与铝粉的全面经验结合在一起，以及他最近推出了新的AM研究设施，他现在可以为他的最新挑战 - AM行业发展和商业化创新的铝制粉末。