Phase II IUCRC at University of Tennessee, Knoxville (UTK): Manufacturing and Materials Joining Innovation Center (Ma2JIC)

制造和材料加入创新中心(Ma2JIC)的研究旨在通过开发基于科学的方法来评估焊接性和焊接性，以缩小材料开发和焊接性之间的差距，评估范围涵盖各种材料。田纳西大学诺克斯维尔分校(UTK)的场地优势包括材料开发、横切能力(包括多尺度表征和建模)以及金属添加剂制造(AM)。AM技术具有在多种方面造福社会的潜力，包括减少稀缺和日益减少的原材料，并为与航空航天、基础设施、能源和汽车工业相关的各种应用生产独特的部件。同样重要的是教育和开发加入工程师和科学家的新一代材料。工程师将通过逐层建造的方式进行设计，部件可以在设计复杂性方面具有无限的可能性。在第一阶段期间，UTK遗址Ma2JIC与大中小型工业和国家实验室建立了合作研究，并开始根据工业需要制定和完善研究议程。在第二阶段，Ma2JIC UTK网站寻求继续发展这些合作以及与未来和现有制造业相关的研究，建立新的合作，并启动项目，以加强与其他Ma2JIC网站的合作。Ma2JIC UTK网站的技术努力通过将设计、机器人和自动化、工艺创新/控制、材料科学、高级表征和高性能计算建模结合在一起的跨学科研究，促进焊接、材料连接和添加剂制造技术的创新。UTK站点的研究组合带来了大规模添加金属制造和表征技术领域的能力，特别是使用基于辐射的散射和使用中子和X射线的成像。这些项目的最终成果将集中在促进与航空航天、基础设施、能源和汽车应用相关的成熟实验室开发的更高产量和规模。这项研究促进了与使用传统和新技术加固和连接的新材料和现有材料的热机械化学性能有关的科学发现。补充的计算和实验表征技术，包括原位和非原位条件，将被应用于理解循环热和应力加载、残余应力发展和微观结构演变等问题。UTK网站将在加入和添加剂制造的十字路口培养基础研究技术和精通这些技术的学生。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

The Manufacturing and Materials Joining Innovation Center (Ma2JIC) research aims to close the gap between materials development and weldability by developing scientifically based methodologies for assessing weldability and joinability that span length scales over a wide variety of materials. The University of Tennessee, Knoxville (UTK) site strengths include materials development, crosscutting capabilities including multi-scale characterization and modeling, and metal additive manufacturing (AM). AM technologies have the potential to benefit society in a multitude of ways including reducing scarce and dwindling raw materials and producing unique parts for variety of applications associated with aerospace, infrastructure, energy, and automotive industries. Equally important is educating and developing a new generation of materials joining engineers and scientists. Engineers will design by building layer-by-layer and parts can feature unlimited possibilities in design complexity. During Phase I the UTK site of Ma2JIC established collaborative research with small-, medium- and large-scale industries and national laboratories and began shaping and refining a research agenda based on industrial needs. During Phase II the Ma2JIC UTK site seeks to continue to grow these collaborations along with research relevant to future and existing manufacturing industries, establishing new collaborations, and initiating projects that will strengthen collaborations with the other Ma2JIC sites.Technical efforts of the Ma2JIC UTK site promote innovations in welding, materials joining, and additive manufacturing technologies through interdisciplinary research bringing together design, robotics and automation, process innovation/control, materials science, advanced characterization and high-performance computational modeling. The research portfolio of the UTK site brings capabilities in the area of large-scale additive metal manufacturing and characterization techniques, especially using radiation based scattering and imaging using neutrons and X-rays. The end results of the projects will be focused on promoting higher yields and scale-up of proven laboratory developments relevant to aerospace, infrastructure, energy, and automotive applications. The research promotes scientific discoveries related to the thermo-mechanical-chemical properties of new and existing materials consolidated and joined using traditional and new techniques. Complementary computational and experimental characterization techniques, including in situ and ex situ conditions, will be applied to understand issues such as cyclic thermal and stress loading, residual stress development, and microstructural evolution. The UTK site will produce fundamental research techniques and students versed in these techniques at the crossroads of joining and additive manufacturing.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.