IUCRC Planning Grant University of Nebraska-Lincoln: Center to Accelerate Recipe Development for Additive Manufacturing of Metals (CARDAMOM)

该奖项为内布拉斯加大学林肯分校（UNL）拟议的三址工业大学合作研究中心（IUCRC）的规划活动提供资金，该中心加速金属增材制造的配方开发（CARDAMOM）。CARDAMOM项目由内布拉斯加大学林肯分校领导，德克萨斯大学格兰德谷分校和阿拉巴马大学合作开展。金属增材制造（AM），也被称为金属3D打印，正在改变美国和世界各地的制造业。这种新的颠覆性技术已经产生了几个成功的故事，主要是在航空航天和生物医学领域。然而，由于粉末原料的限制，缺乏灵活和全面的金属AM研究和生产设施，以及具有有限AM设计经验的劳动力，进一步扩展到更大的制造业社区受到阻碍。CARDAMOM建议通过帮助行业成员在整个“粉末到零件”的开发周期中解决基础研究问题，以最终的工程应用为目标，来解决这些研究需求。此外，该团队将解决教育和劳动力发展的社会影响，这将对来自不同背景和教育机构的学生的培训产生重大影响。最终，CARDAMOM的目标是成为制造商和政府研究实验室的高素质工程师和技术人员的稳定提供者。CARDAMOM的使命是通过与中心行业成员的积极参与，改变用AM创建的高性能、高质量金属部件的制造。关于技术影响，CARDAMOM将追求多个推力，以便：开发生产新合金的增材制造原料的方法；开发新的方法和技术来理解和解释现场测量数据；利用先进的表征技术提供3D微结构和纳米结构信息，将加工方法与部件性能联系起来；开发新的计算方法来预测和理解微观结构的发展，从而更好地设计新材料和新工艺；开发创新的测量方法来量化激光与金属的相互作用；使用先进的计量和无损检测技术来提高增材制造质量；为数据解释和科学洞察开发新的数据分析（机器学习）方法。CARDAMOM将吸引整个供应链的潜在成员，包括设备制造商、航空航天和国防公司、工具和模具生产商、材料开发公司、工艺优化设计师和政府实验室。UNL的具体研究重点将利用内布拉斯加州工程增材技术实验室（具有三个基于激光的混合金属增材制造系统）和纳米工程研究核心设施内的先进表征仪器。UNL的推力包括：混合金属增材制造，它定义了二次加工步骤（例如，铣削，激光强化，超声波强化）与添加剂步骤的协同集成；激光-金属相互作用的基本原理是激光工艺的组成部分；小批量激光粉末床熔炼新合金；原位和非原位AM样品的无损检测及其显微结构；AM微结构的计算模型。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

This award funds planning activities at University of Nebraska-Lincoln (UNL)for a proposed three-site industry university cooperative research center (IUCRC), the Center to Accelerate Recipe Development for Additive Manufacturing of Metals (CARDAMOM). CARDAMOM is led by the University of Nebraska-Lincoln in partnership with the University of Texas Rio Grande Valley, and the University of Alabama. Metal additive manufacturing (AM), also known as metal 3D printing, is transforming manufacturing within the United States and around the world. This new disruptive technology has already resulted in several success stories, primarily within the aerospace and biomedical sectors. However, further expansion to the greater manufacturing community is impeded by limitations in powder feedstocks, a lack of access to flexible and comprehensive metal AM research and production facilities, and a workforce with limited AM design experience. CARDAMOM proposes to address these research needs by assisting industry members along the entire “powder-to-part” development cycle to address fundamental research questions with a view toward final engineering applications. In addition, the team will address societal impacts of education and workforce development which will have a significant impact on the training of students from diverse backgrounds and educational institutions. Eventually, CARDAMOM aims to be a steady provider of high-quality engineers and technicians to manufacturers and government research laboratories. The mission of CARDAMOM is to transform the manufacturing of high-performance, quality metallic components created with AM via active engagement with Center industry members. With respect to the technological impacts, CARDAMOM will pursue multiple thrusts in order to: develop methods for production of AM feedstocks for new alloys; develop new methods and techniques to understand and interpret in situ measurement data; use advanced characterization to provide 3D microstructural and nanostructural information that connects processing methods to component performance; develop new computational methods to predict and understand microstructural development, leading to better ways to design new materials and processes; develop innovative measurements to quantify laser-metal interactions; use advanced metrology and NDE to enhance AM build quality; develop new data analytical (machine learning) approaches for data interpretation and scientific insight. CARDAMOM will engage potential members across the full supply chain, including equipment manufacturers, aerospace and defense companies, tool and die producers, materials development companies, process optimization designers, and government laboratories. The specific research thrusts at UNL will utilize the Nebraska Engineering Additive Technologies Laboratory (with three laser-based hybrid metal AM systems) and the advanced characterization instrumentation within the Nano-Engineering Research Core Facility. The UNL thrusts include: hybrid metal AM which defines the synergistic integration of secondary processing steps (e.g., milling, laser peening, ultrasonic peening) with the additive steps; the fundamentals of laser-metal interactions which are integral to laser-based processes; small-batch laser powder bed fusion for new alloy development; NDE of AM samples, both in situ and ex situ, and their microstructures; computational models of AM microstructures.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.