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.

散装金属眼镜是一种相对较新的工程材料，具有卓越的特性和独特的处理能力。它们的高强度，弹性，耐腐蚀性和软磁性特性使它们对各种军事，医疗，体育和工业应用有吸引力。但是，金属眼镜的连接仍然是多个长度尺度的重大挑战。这种与行业联络的赠款机会（Goali）研究将使用固态连接方法来实现具有出色表面特性的大量散装金属眼镜。将这些结构用作生物植入物可能会减少组织炎症，骨骼恶化和替代手术的可能性，从而促进民族健康和福利。将堆叠的金属眼镜用作装甲车辆上的穿透器盾牌和防止轨道碎屑影响的航天器保护将大大提高国防利益。拟议的项目将在许多方面合作，并在学术和工业伙伴之间进行积极参与，包括针对该项目资助的两个研究生实习。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的团体的学生，并将为高级制造业的下一代科学家/工程师提供贡献。该项目还将通过将K-12学生和教师暴露于科学和技术领域的新兴领域，从而使社会受益。该目标项目的研究目标是通过一种综合的实验和建模方法来实现对摩擦搅动的基本科学理解。该研究项目将基于有希望的初步实验，以连接摩擦搅拌连接过程中相邻层中材料流的理解，多尺度变形行为，分子动力学模拟和大规模有限元建模。提议的工作产生的独特而基本的科学贡献将为四倍。首先，该研究将提高对无定形金属和复合材料高应变加工过程中剪切混合和冶金键形成的了解。其次，它将能够理解由于不同微观结构特征的相互作用而产生的变形机制。涉及原子尺度模型的第三部分将对高应变响应自由体积演变创造知识。最后，拟议的研究将有助于开发一个框架，以预测位置特定特性，这些特性由空间分辨的结构从温度，冷却速率和应变分布中进化。拟议研究的主要创新在于实现非晶金属的均匀和堆叠结构，使用现有技术无法实现的假设是无法实现的，即在非晶金属成分之间的界面上强烈的剪切混合会破裂原始金属流动和金属流动性键合的表面氧化物。与铸造的无定形结构相比，加工过程中的高应变预计会增加金属眼镜的原子尺度不均匀性，并显着改善了机械性能。该奖项反映了NSF的法定任务，并已通过评估该基金会的智力功能和广泛的影响来评估NSF的法定任务，并被认为是值得的。

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