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Award Detail

Doing Business As Name:University of South Carolina at Columbia
  • Caizhi Zhou
  • (803) 576-6527
Award Date:01/21/2020
Estimated Total Award Amount: $ 416,436
Funds Obligated to Date: $ 416,435
  • FY 2017=$416,435
Start Date:01/01/2020
End Date:01/31/2022
Transaction Type:Grant
Awarding Agency Code:4900
Funding Agency Code:4900
CFDA Number:47.041
Primary Program Source:040100 NSF RESEARCH & RELATED ACTIVIT
Award Title or Description:CAREER: Understanding Interface-Mediated Deformation in Layered Composites through Modeling and Experiment
Federal Award ID Number:2015598
DUNS ID:041387846
Parent DUNS ID:041387846
Program:Materials Eng. & Processing
Program Officer:
  • Alexis Lewis
  • (703) 292-2624

Awardee Location

Street:Sponsored Awards Management
Awardee Cong. District:06

Primary Place of Performance

Organization Name:University of South Carolina at Columbia
Street:300 Main Street
Cong. District:06

Abstract at Time of Award

Metallic nanolayered composites are a special class of metallic composite materials with ultra-fine layer thicknesses which impart unique behavior. They exhibit large increases in strength compared to larger-scale bulk constituents. In some cases, they display increased ductility, high radiation damage tolerance, shock resistance, and thermal stability; thus showing great potential for applications in a variety of fields. These materials can lead to new performance levels and energy efficiency not achievable with current materials and thus can have a significant economic impact. However, a lack of understanding of the underlying mechanisms that control the properties of metallic nano layered composites severely limits our current ability to process and tailor them. This Faculty Early Career Development (CAREER) award supports fundamental research to advance fundamental knowledge, develop computational tools and provide design guidelines for metallic nanolayered composites with exceptional controllable properties. Results from this research have the potential to enhance U.S. competitiveness within the markets of aerospace and electronic devices. As part of this project, the research results will be made available to other researchers and the general public through publications and active participation in conferences and workshops. With the aim of educating the twenty-first century workforce, this work also increases the exposure of high school students to science and technology concepts through outreach programs, and provides invaluable educational opportunities for student researchers to collaborate with National Laboratories. This research is to develop a new experimentally-validated multiscale-modeling approach to elucidate the mechanical properties and deformation mechanisms of metallic nanolayered composites. The specific research objectives are: (i) to explore the influence of dislocation-interface interactions on the strength of metallic nanolayered composites; (ii) to investigate the effects of the interface structure and layer thickness on the ductility and plastic instability; (iii) to identify the roles of interface structure and material properties of constituents in the texture evolution during the accumulative roll bonding process; (iv) to reveal the microscopic mechanisms for cyclic deformation behavior of metallic nanolayered composites. The research results will provide insights into the interaction between dislocations and interfaces and their interplay with macroscopically applied fields. The seamless integration of the multiscale-modeling approach and experiment studies will allow one-to-one comparisons between fundamental defect models and deformation experiments on nanostructured materials, creating a unique opportunity for testing the applicability of state-of-the-art theories of crystal defects in real materials systems.

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