DMREF/Collaborative Research: Accelerated Development of Next Generation of Ti Alloys by ICMSE Exploitation of Non-Conventional Transformation Pathways

DMREF/合作研究：通过 ICMSE 探索非常规转变途径加速下一代钛合金的开发

• 批准号: 1435483
• 负责人: Yunzhi Wang
• 金额: $ 60.6万
• 依托单位: Ohio State 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=1435483&HistoricalAwards=false
• 关键词: DMREF; Collaborative; Research; Accelerated; Development

Non-technical SummaryThis DMREF research program aims to formulate an integrated computational materials science and engineering (ICMSE) approach and, consequently develop tools, to accelerate the development of new types of alloys that most likely will have been missed by the traditional trial-and-error method. This effort is an integral part of the national efforts under the Materials Genome Initiative (MGI) and the Integrated Computational Materials Engineering (ICME) initiative. The successful implementation of these new methodologies and design strategy for materials R&D will have a profound impact on industrial exploitation of new materials and optimization of existing ones. The provision of such ICME tools, applicable to an important class of widely applicable structural materials, will have a marked impact on a broad range of advanced technological areas including aerospace, transportation and energy. Because future materials R&D activities, requiring substantially reduced time and cost cycles, must integrate computational materials research with critical experiments, the proposed program will directly prepare graduate students to immediately contribute to the success of ICMSE in industry. Additionally, the proposed training programs for researchers involved in materials development will accelerate the implementation of the new methodology in industry, resulting in very much increased effectiveness of our materials technologists. Regarding educational outreach, the present DMREF program encourages high school students with diverse ethnic backgrounds to enter science and engineering disciplines.Technical SummaryThis research program involves the integration of sophisticated computational models, at multiple scales, highly advanced materials characterization techniques, and combinatorial and accelerated methods for materials processing and property evaluation. Such a unique coupling will undoubtedly raise significantly the state-of-the-art in the discovery and development of new structural materials. Regarding the targeted material system involved in the proposed program, i.e. titanium alloys, the focus is on the exploitation of recently discovered non-conventional transformation pathways. Thus, recent theoretical and experimental investigations suggest possibilities of achieving extremely fine and uniform alpha+beta microstructures exhibiting substantially improved properties through these non-conventional transformation pathways including pseudo-spinodal decomposition and precursory phase separation. Using an integrated computational materials science and engineering (ICMSE) approach, the development of next generation of Ti alloys based on these new and promising transformation mechanisms will be accelerated. For the first time, alloy development will be led by computational modeling, mechanistically informed and validated by critical experiments involving novel combinatorial methods for materials processing and state-of-the-art characterization techniques. The focus is on Ti alloys for structural applications in a broad range of advanced technological areas including aerospace, transportation and energy (petrochemical and nuclear). The outcomes will lead to a microstructure simulator, a property simulator, and an alloy design simulator for titanium alloys. An additional exciting aspect of this program is that the development and application of this new methodology is expected to result in new science in alloy design.

非技术摘要DMREF研究计划旨在制定综合的计算材料科学与工程（ICMSE）方法，并因此开发工具，以加速新型合金的开发，这些合金很可能会被传统的试验方法所遗漏。这项工作是材料基因组倡议（MGI）和集成计算材料工程（ICME）计划的国家努力不可或缺的一部分。这些新的方法论和材料研发设计策略的成功实施将对新材料的工业开发和现有材料的优化产生深远的影响。提供此类ICME工具，适用于一类重要的广泛适用结构材料，将对广泛的高级技术领域产生明显影响，包括航空航天，运输和能源。由于未来的材料研发活动，需要大幅减少时间和成本周期，必须将计算材料研究与关键实验整合在一起，因此拟议的计划将直接为研究生做好准备，以立即为ICMSE在行业中的成功做出贡献。此外，针对参与材料开发的研究人员的拟议培训计划将加速行业中新方法的实施，从而提高了我们的材料技术人员的有效性。关于教育宣传，目前的DMREF计划鼓励具有不同种族背景的高中学生进入科学和工程学学科。技术摘要这项研究计划涉及在多个规模，高级高级材料表征技术以及材料处理和物业评估的组合和加速方法的复杂计算模型的整合。这种独特的耦合无疑将显着提高新结构材料的发现和开发。关于拟议程序（即钛合金）所涉及的目标材料系统，重点是剥削最近发现的非惯例转换途径。因此，最近的理论和实验研究表明，通过这些非惯性转化途径（包括伪旋转分解和前体相分离），实现极高和均匀的α+β微结构的可能性。使用集成的计算材料科学与工程（ICMSE）方法，将加速基于这些新的和有前途的转换机制的下一代Ti合金的开发。合金开发将首次由计算建模领导，该计算模型通过机械学的知识和验证，这些实验涉及材料加工和最新表征技术的新型组合方法。重点是用于在包括航空航天，运输和能源（石化和核能）在内的各种高级技术领域的结构应用中。结果将导致微结构模拟器，属性模拟器和钛合金合金设计模拟器。该计划的另一个令人兴奋的方面是，这种新方法的开发和应用有望在合金设计中导致新科学。