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

DMREF/合作研究：合作加速增材制造新合金的发现

• 批准号: 1435544
• 负责人: Anthony Rollett
• 金额: $ 34.5万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-10-01 至 2017-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1435544&HistoricalAwards=false
• 关键词: DMREF; Collaborative; Research; Collaboration; Accelerate

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.

非技术：最近，对增材制造（也称为3-D打印）引起了重大兴趣。尽管旨在探索几何设计空间的许多努力，从而实现了创新的组件，但这种努力总是使用数十年前为传统制造方法设计和优化的旧版材料（例如Ti-6al-4V）。当材料不是设计策略的一部分时，既有内在的风险，又有机会丢失。在风险方面，这种遗产材料可能表现出比使用常规方法制备的相同材料的属性。例如，当任意选择TI-6-4进行增材制造过程时，所得材料表现出根据测试方向和空间位置而变化的属性。关于丢失的机会，添加剂制造工艺具有独特的特征，例如非常高的固化率，可以为正确的材料带来优越的特性。 因此，有必要设计新材料来利用添加剂制造过程的独特特征，以达到超过使用遗产材料当前可能的属性的平衡。在这种设计材料下开发的钛合金将通过一系列的行业传播研讨会来宣传我们未来（DMREF）计划以及加速合金开发的一般框架。这种传播将影响广泛的经济部门，包括航空航天，汽车和生物医学。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。该项目试图：（1）发现和建模添加剂制造过程的远距离平衡条件与所得的微观结构和特性的材料组成之间的基本相互关系； （2）完全描述了使用多维，多空间和多光谱方法的材料组成和结构； （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组成，结构和属性之间的隐藏相关性（例如机制）； （4）通过计算建模和关键实验验证机制； （5）设计，作为一个多元大学团队，是增材制造过程的新材料。在此过程中，团队将同时制定本体论和数据科学标准，以便在计划期间可以轻松地在四所大学中共享信息，并在努力结束时更广泛地传播信息。