Understanding the Structure, Corrosion and Mechanical Behavior of Nanostructured Al-V Alloys Produced by High-Energy Ball Milling and Subsequent Consolidation

了解通过高能球磨和后续固结生产的纳米结构 Al-V 合金的结构、腐蚀和机械行为

• 批准号: 2131440
• 负责人: Rajeev Gupta
• 金额: $ 32.92万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-10-01 至 2022-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2131440&HistoricalAwards=false
• 关键词: Understanding; Structure; Corrosion; Mechanical; Behavior

Developing stronger, lightweight, and durable materials is critical to address current technological challenges in many industries including automotive, aerospace, energy and infrastructure. The strength and durability of metallic materials is limited by the conventional compositions and manufacturing technologies. In particular, aluminum alloys suffer from corrosion susceptibility when subjected to processing techniques used to increase the strength of many alloys. The development of new aluminum alloys, with concurrent high strength and corrosion resistance, requires new scientific knowledge of the mechanisms that control corrosion and deformation behavior in these materials. This award supports fundamental research to uncover these mechanisms of degradation and strengthening. The investigation will also support the development of the knowledge base and workforce for the nation's future. The graduate and undergraduate students working on this research will be trained to address future technological challenges in a multidisciplinary setting. The outcomes of the research will help in developing teaching materials to support the nation's first undergraduate program in corrosion engineering at the University of Akron, and to support K-12 outreach activities to work with the local communities and high school students to increase STEM awareness.Use of aluminum (Al) alloys is limited in many applications due to their limited strength and deterioration of the corrosion performance with efforts made to increase their strength. Therefore, developing new Al alloys exhibiting ultra-high strength and excellent corrosion resistance is of paramount importance. It is hypothesized that grain refinement 100 nm and extended solid solubility of Vanadium (V) in Al can improve mechanical and corrosion properties simultaneously. Nanocrystalline Al-V alloys with a wide range of V content will be produced using high-energy ball milling. The alloys will be exposed to various heat treatments for studying the thermal stability and creating a wide range of grain size, V solid solubility, and intermetallic distribution. The role of the microstructure on passivation, corrosion initiation and propagation processes, and mechanical properties will be studied using state-of-the-art material and surface characterization, electrochemical and mechanical testing techniques. This investigation will advance scientific understanding of the: 1) influence of the processing on the structure, corrosion and mechanical behavior of the nanostructured Al-V alloys, 2) role of nanocrystalline structure, intermetallics, and extended solid solubility of V on the corrosion and mechanical properties, and 3) phenomena leading to the simultaneous improvement in corrosion and mechanical properties. Fundamental understanding developed in this research will lead to a theoretical framework for the development of ultra-strong and corrosion resistant Al alloys.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.

开发更强大，轻巧和耐用的材料对于应对许多行业的当前技术挑战至关重要，包括汽车，航空航天，能源和基础设施。金属材料的强度和耐用性受常规组成和制造技术的限制。尤其是，铝合金受到用于增加许多合金强度的加工技术的腐蚀敏感性。具有同时高强度和耐耐药性的新铝合金的开发需要对控制这些材料中控制腐蚀和变形行为的机制的新科学知识。该奖项支持基础研究，以发现这些降解和加强机制。调查还将支持为国家未来的知识基础和劳动力的发展。从事这项研究的研究生和本科生将接受培训，以应对多学科环境中的未来技术挑战。这项研究的结果将有助于开发教材，以支持阿克伦大学在腐蚀工程领域的首个本科课程，并支持K-112外展活动，以与当地社区和高中生合作以提高茎的意识。铝（AL）合金的促进效果有限，因此在许多应用中限制了铝（AL）合金的限制，从而提高了良好的努力和努力的努力。因此，开发具有超高强度和出色耐腐蚀性的新的AL合金至关重要。 假设晶粒细化100 nm，钒（V）在Al中的固体溶解度可以同时改善机械和腐蚀特性。使用高能量球铣削将生产具有广泛V含量的纳米晶体Al-V合金。合金将暴露于各种热处理，以研究热稳定性并创建各种晶粒尺寸，V固体溶解性和金属间分布。将使用最新的材料和表面表征，电化学和机械测试技术来研究微观结构在钝化，腐蚀引发和传播过程中的作用。这项研究将提高对以下方面的科学理解：1）处理对纳米结构的Al-V合金的结构，腐蚀和机械行为的影响，2）纳米晶体结构，金属间质量以及V对V腐蚀和机械性能的固体溶解度的扩展作用，以及3）现象，并同时改善了Corrosion和机制。这项研究中发展的基本理解将为超强和耐腐蚀的AL合金发展提供理论框架。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影响的评估来评估值得支持的。

项目成果

Effect of V content on corrosion behavior of high-energy ball milled AA5083

• DOI: 10.1016/j.corsci.2021.109465
• 发表时间: 2021-04-14
• 期刊: CORROSION SCIENCE
• 影响因子: 8.3
• 作者: Esteves, L.;Christudasjustus, J.;Gupta, R. K.
• 通讯作者: Gupta, R. K.

Corrosion behavior of a bulk nanocrystalline Al-Fe alloy

• DOI: 10.1016/j.corsci.2022.110727
• 发表时间: 2022-12
• 期刊: Corrosion Science
• 影响因子: 8.3
• 作者: F. Ozdemir;C. S. Witharamage;J. Christudasjustus;AA. Darwish;H. Okuyucu;R.K. Gupta

The Effect of Milling Time and Speed on Solid Solubility, Grain Size, and Hardness of Al-V Alloys

• DOI: 10.1007/s11665-021-05663-x
• 发表时间: 2021-03
• 期刊: Journal of Materials Engineering and Performance
• 影响因子: 2.3
• 作者: C. S. Witharamage;J. Christudasjustus;R. Gupta

Corrosion-resistant metallic coatings for aluminum alloys by cold spray

• DOI: 10.1016/j.corsci.2022.110720
• 发表时间: 2022-12
• 期刊: Corrosion Science
• 影响因子: 8.3
• 作者: C. S. Witharamage;Mohammed A. Alrizqi;Jijo Chirstudasjustus;A. A. Darwish-A.;Troy Y. Ansell;A. Nieto;R. K. Gupta

Need of an Inert Atmosphere for High-Energy Ball Milling of Al Alloys

铝合金高能球磨需要惰性气氛

• DOI: 10.1007/s11665-022-07309-y
• 发表时间: 2022
• 期刊: Journal of Materials Engineering and Performance
• 影响因子: 2.3
• 作者: Ozdemir, F.;Christudasjustus, J.;Vukkum, V. B.;Okuyucu, H.;Gupta, R. K.
• 通讯作者: Gupta, R. K.