Collaborative Research: RUI: IRES - Track I: US-Australia collaboration on a new class of lead-free copper alloys to meet international health demands

合作研究：RUI：IRES - 第一轨道：美国与澳大利亚合作开发新型无铅铜合金，以满足国际健康需求

• 批准号: 2106617
• 负责人: Lori Bassman
• 金额: $ 20.12万
• 依托单位: Harvey Mudd College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-10-01 至 2024-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2106617&HistoricalAwards=false
• 关键词: Collaborative; Research; RUI; IRES; Track

U.S. undergraduate students from Harvey Mudd College (HMC) and University of California (UC) Merced will collaborate with researchers at University of New South Wales, Sydney, Australia to develop a new class of non-toxic, commercially viable, brass-type alloys. Due to the severe health impacts of environmental lead, legislation to eliminate it from infrastructure and products is rapidly being implemented, with particular focus on the lead-containing brass alloys used in municipal and residential plumbing. The alloys developed through this project will be a critical contribution toward meeting the global challenge of eliminating lead-containing brasses within the next decade. The project will provide international research mentoring for a diverse group of undergraduates (15 total over three years), including engineering, chemistry, and physics majors at HMC and UC Merced. Students underrepresented in science and engineering, and especially first-generation college students, will be encouraged to take advantage of this opportunity. In the School of Materials Science and Engineering and the Electron Microscope Unit at UNSW, the students will have extensive access to laboratories, microscope facilities, training, and physical metallurgy expertise. This project will contribute to the maturation of students into confident, enthusiastic researchers who are prepared for science and engineering careers in international research environments. Current alternatives for leaded brass have manufacturing, material property and cost limitations. This project will utilize the performance/cost benefits and flexibility of a compositionally-complex brass alloy system developed previously through IRES-supported collaboration with UNSW researchers as the base for a new family of alloys that will fill the materials gap left by the exit of leaded brasses. With the guidance of their UNSW mentors, students will develop the proposed alloys by incorporating new cost-effective, non-toxic candidates to perform the lubricating and chip breaking functions of lead during machining. They will conduct experimental and computational projects to investigate key mechanisms responsible for desirable mechanical properties and workability, and to optimize the alloy family for these properties and machinability. These projects will engage students in thermodynamic modeling, first principles atomic-scale computational modeling, experimental alloy fabrication, and mechanical and microstructural characterization. The goal is for the proposed alloy family to provide a commercially viable replacement for leaded brasses to meet emerging legislation aimed at major health and environmental benefits.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.

来自Harvey Mudd学院（HMC）和加利福尼亚大学Merced的美国本科生将与澳大利亚悉尼新南威尔士大学的研究人员合作开发新的无毒，商业上可行的，黄铜型合金。由于环境铅对健康的严重影响，从基础设施和产品中消除它的立法正在迅速实施，尤其专注于在市政和住宅管道中使用的含铅黄铜合金。通过该项目开发的合金将为应对未来十年内消除含铅黄铜的全球挑战做出重要贡献。该项目将为HMC和UC Merced的各种本科生提供国际研究指导（三年内总共15个），包括工程，化学和物理专业。将鼓励学生在科学和工程学，尤其是第一代大学生中的人数不足，以利用这一机会。在UNSW材料科学与工程学院以及电子显微镜单元，学生将广泛访问实验室，显微镜设施，培训和物理冶金专业知识。该项目将有助于学生成熟成为自信，热情的研究人员，他们为国际研究环境中的科学和工程职业做好了准备。当前的铅黄铜替代方案具有制造，材料财产和成本限制。该项目将利用以前通过IRES支持的与UNSW研究人员合作开发的构图复合铜管合金系统的性能/成本优势和灵活性，作为新合金家族的基础，该基础将填补由铅铜管的出口所留下的材料间隙。在UNSW导师的指导下，学生将通过合并新的成本效益，无毒的候选者来开发提出的合金，以执行加工过程中铅的润滑和芯片破坏功能。他们将进行实验和计算项目，以调查负责理想的机械性能和可工程性的关键机制，并优化合金家族的这些特性和可加工性。这些项目将吸引学生进行热力学建模，第一原理原子尺度计算建模，实验合金制造以及机械和微结构表征。目的是让拟议中的合金家族为有限的黄铜提供商业上可行的替代品，以满足旨在旨在重大健康和环境福利的新兴立法。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛的审查标准来通过评估来获得支持的。