DMREF/Collaborative Research: Collaboration to Accelerate the Discovery of New Alloys for Additive Manufacturing

非技术：最近，人们对增材制造（也称为3d打印）产生了浓厚的兴趣。虽然有许多努力旨在探索几何设计空间，从而实现创新组件，但这些努力总是使用传统材料（例如Ti-6Al-4V），这些材料是几十年前为传统制造方法设计和优化的。当材料不是设计策略的一部分时，既存在内在风险，也会失去机会。关于风险，这些遗留材料可能表现出不如使用传统方法制备的相同材料的特性。例如，当Ti-6-4被任意选择用于增材制造工艺时，所得到的材料的性能会根据测试方向和空间位置而变化。关于失去的机会，增材制造工艺有其独特的特点，例如非常高的凝固速率，这可以为合适的材料带来优越的性能。因此，有必要设计新材料，利用增材制造工艺的独特特性，实现性能的平衡，超过目前使用传统材料时的性能。在DMREF项目下开发的钛合金，以及加速合金开发的总体框架，将通过一系列行业传播研讨会进行传播。这种传播将影响广泛的经济部门，例如包括航空航天、汽车和生物医学。技术：该项目旨在通过增材制造技术设计一种现代抗蠕变β -钛合金。这将通过整合高通量组合材料科学、最先进的材料表征、计算材料科学和数据科学来实现。该项目旨在：(1)发现和模拟增材制造过程的远非平衡条件和材料成分对所得微观结构和性能之间的基本相互关系；(2)利用多维、多空间、多光谱的方法全面描述材料的组成和结构；(3)通过强大的数据科学方法，确定使用计算和实验技术评估的成分、结构和属性之间的隐藏相关性（例如，机制）；(4)通过计算模型和关键实验验证机理；和(5)设计，作为一个多大学的团队，一种新的材料增材制造工艺。在此过程中，该团队将开发本体和数据科学标准，以便在项目期间在四所大学之间轻松共享信息，并在项目结束时更广泛地传播信息。

Non-technical: Recently, there has been significant interest in additive manufacturing, also known as 3-D printing. While there have been many efforts aimed at exploring the geometric design space, thus enabling innovative components, such efforts invariably use legacy materials (e.g., Ti-6Al-4V) that were designed and optimized decades ago for conventional manufacturing approaches. When the material is not part of the design strategy, there is both an intrinsic risk and an opportunity lost. With respect to risk, such legacy materials may exhibit properties that are inferior to the same material prepared using conventional approaches. For example, when Ti-6-4 is arbitrarily selected for additive manufacturing processes, the resultant material exhibits properties that vary according to both testing direction and spatial location. With respect to the lost opportunity, there are unique characteristics of the additive manufacturing processes, such as very high solidification rates, that can result in superior properties for the right materials. Thus, there is a need to design new materials that leverage the unique characteristics of additive manufacturing processes to achieve a balance of properties that exceeds what is currently possible when legacy materials are used. The titanium alloys developed under this Designing Materials to Revolutionize and Engineer our Future (DMREF) program, as well as the general framework of accelerated alloy development, will be disseminated through a series of industry dissemination workshops. This dissemination will impact a wide range of economic sectors, including, for example, aerospace, automotive, and biomedical.Technical: This project is directed toward the design of a modern creep-resistant beta-titanium alloy to be produced via additive manufacturing. This will be achieved by integrating high-throughput combinatorial materials science, state-of-the-art materials characterization, computational materials science, and data-science. The project seeks to: (1) discover and model the fundamental interrelationship between the far-from equilibrium conditions of additive manufacturing processes and materials composition on the resulting microstructure and properties; (2) fully describe the materials composition and structure using multi-dimensional, multi-spatial, and multi-spectral approaches; (3) determine, via powerful data science approaches, hidden correlations (e.g., mechanisms) between composition, structure, and properties as assessed using both computational and experimental techniques; (4) validate the mechanisms via computational modeling and critical experimentation; and (5) design, as a multi-university team, a new material for additive manufacturing processes. Along the way, the team will develop both an ontology and data science standards so that the information can be shared easily amongst the four universities during the program and disseminated more broadly at the conclusion of the effort.