ERI: Manufacturing USA: Additive Manufacturing of Iron based Shape Memory Alloy

ERI：美国制造：铁基形状记忆合金的增材制造

• 批准号: 2301766
• 负责人: Ala Qattawi
• 金额: $ 20万
• 依托单位: University of Toledo
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-08-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2301766&HistoricalAwards=false
• 关键词: ERI; Manufacturing; USA; Additive; Iron

Advances in additive manufacturing have enabled the processing of functionally graded materials and shape memory alloy systems that were previously difficult to process using conventional methods. This Engineering Research Initiation (ERI) grant will support fundamental research in the fabrication of iron-based shape memory alloy using heat-assisted additive manufacturing, which will lay the theoretical foundation for material design and manufacturing. The research outcome will enable new industrial applications that are sensitive to extreme temperatures, such as batteries, biomedical devices, robotics, and others. Partnership with LIFT Manufacturing USA center will offer training opportunities to graduate students, promote undergraduate research and outreach to diverse groups of younger students. This grant will impact the manufacturing industry by facilitating the implementation of metal additive manufacturing and promoting its consistency, while training future leaders of advanced manufacturing.Compared to well-studied nickel titanium (NiTi) shape memory alloy systems, iron-based shape memory alloys offer a higher strain recovery percentage and enable new strain recovery behavior that is less dependent on the environment temperature. The cost of iron-based shape memory alloy is significantly lower compared to its NiTi counterpart. However, the processing of iron-based shape memory alloy using additive manufacturing is not well understood. This research aims to understand the effect of processing parameters and material composition on fabrication of iron-based shape memory alloys. The project includes three research tasks: (1) understanding the impact of additive manufacturing processing parameters on the mechanical properties of fabricated iron-based shape memory alloy; (2) identifying the transformation temperatures and strain recovery behavior, as well as their relationship to the material composition, (3) developing an in-situ thermal tomography monitoring and modeling framework for additively manufactured iron-based shape memory alloys to define tailored material properties and responses. The research will fill the knowledge gap needed to design iron-based shape memory alloys amenable to additive manufacturing and advance the understanding of strain recovery behaviors.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.

增材制造业的进步使得能够处理功能分级的材料和形状的内存合金系统，这些系统以前很难使用常规方法处理。这项工程研究启动（ERI）赠款将使用热辅助添加剂制造制造基于铁的形状内存合金的基础研究，这将奠定材料设计和制造的理论基础。研究结果将使对极端温度敏感的新工业应用，例如电池，生物医学设备，机器人技术等。与Lift Manufacturing USA中心的合作伙伴关系将为研究生提供培训机会，促进本科研究并向不同的年轻学生宣讲。该赠款将通过促进金属添加剂制造的实施并促进其一致性来影响制造业，同时训练Advanced Manufacturing.com的未来领导者，以对经过深入研究的镍钛（NITI）形状内存合金系统，基于铁的形状存储合金提供更高的应变恢复率，并提供更高的应变率，并促进了较少依赖环境温度的新应变恢复行为。与其NITI对应物相比，基于铁的形状内存合金的成本明显低。但是，使用添加剂制造的基于铁的形状内存合金处理尚不清楚。这项研究旨在了解加工参数和材料组成对铁基形状存储合金制造的影响。该项目包括三个研究任务：（1）了解添加剂制造处理参数对制造的铁基形状存储合金的机械性能的影响； （2）识别转化温度和应变恢复行为及其与材料组成的关系，（3）为添加性生产的基于铁的基于铁的形状存储合金制定原位热层析成像监测和建模框架，以定义量身定制的材料特性和响应。这项研究将填补设计基于铁的形状记忆合金所需的知识差距，可为增材制造和提高对应变恢复行为的理解。该奖项反映了NSF的法定任务，并被认为是通过基金会的智力优点和更广泛的影响来通过评估来支持的。