GOALI: Friction Stir Joining of Bulk Metallic Glasses and Their Composites

目标：大块金属玻璃及其复合材料的搅拌摩擦连接

• 批准号: 1762545
• 负责人: Sundeep Mukherjee
• 金额: $ 46.93万
• 依托单位: University of North Texas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-07-15 至 2024-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1762545&HistoricalAwards=false
• 关键词: GOALI; Friction; Stir; Joining; Bulk

Bulk metallic glasses are a relatively new class of engineering materials with a combination of exceptional properties and unique processing ability. Their high strength, elasticity, corrosion resistance and soft magnetic properties make them attractive for a range of military, medical, sporting, and industrial applications. However, joining of metallic glasses remains a major challenge across multiple length-scales. This Grant Opportunity for Academic Liaison with Industry (GOALI) research will use a solid-state joining approach to achieve large sections of bulk metallic glasses with superior surface properties. Use of these structures as bio-implants could potentially lessen the likelihood of tissue inflammation, bone deterioration and replacement surgeries thus advancing national health and welfare. Use of stacked metallic glasses as penetrator shields on armor vehicles and spacecraft protection against orbital debris impacts will significantly advance the national defense interests. The proposed project will be collaborative in many aspects, with active engagement between the academic and industrial partners, including an industry internship for two graduate students funded by the project. It will provide a rare opportunity for students to integrate classroom concepts with industrial research and development. The project will engage students from underrepresented groups and will contribute to educating the next generation of scientists/engineers in advanced manufacturing. The project will also benefit society by exposing K-12 students and teachers to emerging areas in science and technology.The research objective of this GOALI project is to achieve fundamental scientific understanding of friction stir joining process for amorphous metallic alloys and their composites by an integrated experimental and modeling approach. The research project will build on promising preliminary experiments to connect the understanding of material flow in adjoining layers during friction stir joining process, multi-scale deformation behavior, molecular dynamics simulations, and large-scale finite element modeling. The unique and fundamental scientific contributions resulting from the proposed work will be four fold. Firstly, the research will advance knowledge of shear mixing and metallurgical bond formation during high strain processing of amorphous metals and composites. Secondly, it will enable understanding of deformation mechanisms resulting from the interaction of different microstructural features. Third part involving atomistic-scale models will create knowhow on free volume evolution in response to high strain. Lastly, the proposed research will help in the development of a framework to predict location specific properties consisting of spatially resolved structure evolution from the temperature, cooling rate, and strain distribution. The main innovation of the proposed research lies in achieving homogeneous and stacked structures of amorphous metals that are unattainable using existing technologies with the hypothesis that intense shear mixing at the interface between amorphous metallic components ruptures the surface oxide resulting in pristine metal flow and metallurgical bonding. The high strain during processing is expected to increase atomic-scale inhomogeneity in metallic glasses leading to rejuvenation and markedly improved mechanical properties compared to cast amorphous structures.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.

大块金属玻璃是一类相对较新的工程材料，具有优异的性能和独特的加工能力。其高强度，弹性，耐腐蚀性和软磁性能使其在军事，医疗，体育和工业应用领域具有吸引力。然而，金属玻璃的连接仍然是跨多个长度尺度的主要挑战。这项学术与工业联络资助机会（GOALI）研究将使用固态连接方法来实现具有优异表面性能的大块金属玻璃。使用这些结构作为生物植入物可以潜在地减少组织炎症、骨骼退化和置换手术的可能性，从而促进国民健康和福祉。在装甲车辆和航天器上使用堆叠金属玻璃作为防轨道碎片撞击的穿透护盾，将极大地促进国防利益。拟议的项目将在许多方面进行合作，学术和工业合作伙伴之间将积极参与，包括由该项目资助的两名研究生的行业实习。它将为学生提供一个难得的机会，将课堂概念与工业研究和发展相结合。该项目将吸引来自代表性不足群体的学生，并将有助于培养下一代先进制造业的科学家/工程师。该项目还将使K-12学生和教师接触到新兴的科学技术领域，从而造福社会。本GOALI项目的研究目标是通过实验和建模相结合的方法，对非晶金属合金及其复合材料的搅拌摩擦连接过程进行基本的科学认识。该研究项目将建立在有前景的初步实验基础上，以了解搅拌摩擦接合过程中相邻层的物质流动、多尺度变形行为、分子动力学模拟和大规模有限元建模。拟议的工作所产生的独特和基础的科学贡献将是四倍。首先，该研究将推进非晶金属和复合材料在高应变加工过程中的剪切混合和冶金结合形成的知识。其次，它将使人们能够理解不同微观结构特征相互作用产生的变形机制。第三部分涉及原子尺度模型，将创建响应高应变的自由体积演化的专有技术。最后，提出的研究将有助于建立一个框架来预测由温度、冷却速度和应变分布组成的空间分辨结构演变的位置特定性质。本研究的主要创新在于实现非晶金属的均匀和堆叠结构，这是现有技术无法实现的，假设在非晶金属成分之间的界面处强烈的剪切混合破坏了表面氧化物，导致原始金属流动和冶金结合。与铸造非晶结构相比，加工过程中的高应变有望增加金属玻璃的原子尺度非均匀性，从而导致回复性和显著改善机械性能。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Time-dependent deformation mechanism of metallic glass in different structural states at different temperatures

• DOI: 10.1016/j.jnoncrysol.2021.121221
• 发表时间: 2021-11-10
• 期刊: JOURNAL OF NON-CRYSTALLINE SOLIDS
• 影响因子: 3.5
• 作者: Ghodki, Nandita;Sadeghilaridjani, Maryam;Mukherjee, Sundeep
• 通讯作者: Mukherjee, Sundeep

Nanomanufacturing of Non-Noble Amorphous Alloys for Electrocatalysis

• DOI: 10.1021/acsaem.0c02221
• 发表时间: 2020-11
• 作者: V. Hasannaeimi;Xiaowei Wang;R. Salloom;Z. Xia;J. Schroers;S. Mukherjee

High-Temperature Nano-Indentation Creep Behavior of Multi-Principal Element Alloys under Static and Dynamic Loads

• DOI: 10.3390/met10020250
• 发表时间: 2020-02
• 期刊: Metals
• 影响因子: 2.9
• 作者: Maryam Sadeghilaridjani;S. Mukherjee

Core effect of local atomic configuration and design principles in AlxCoCrFeNi high-entropy alloys

• DOI: 10.1016/j.scriptamat.2019.11.016
• 发表时间: 2020-03-01
• 期刊: SCRIPTA MATERIALIA
• 影响因子: 6
• 作者: Yang, Yu-Chia;Liu, Cuixia;Xia, Zhenhai
• 通讯作者: Xia, Zhenhai

Deformation behavior of metallic glass composites and plasticity accommodation at microstructural length-scales

• DOI: 10.1016/j.mtcomm.2020.101237
• 发表时间: 2020-09-01
• 期刊: MATERIALS TODAY COMMUNICATIONS
• 影响因子: 3.8
• 作者: Hasannaeimi, Vahid;Muskeri, Saideep;Mukherjee, Sundeep
• 通讯作者: Mukherjee, Sundeep