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Mechanical characterization of grain boundaries using nanoindentation |
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| Affiliation: | 1. Georgia Institute of Technology;1. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;2. School of Materials Science & Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;3. Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, USA;1. Institut für Werkstofftechnik, Universität Siegen, D-57068 Siegen, Germany;2. Institut für Mechanik und Regelungstechnik - Mechatronik, Universität Siegen, D-57068 Siegen, Germany;1. George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA;2. Mechanical Engineering Department, King Saud University, PO Box 800, Riyadh 11421, Saudi Arabia |
| Abstract: | Grain boundaries and other mesoscale interfaces play an important role in controlling macroscale mechanical properties of various hierarchical materials needed for advanced technologies. Recent enhancements in both instrumentation and data analyses protocols have demonstrated the tremendous potential of nanoindentation as a high-throughput technique for robust and quantitative assessment of the mechanical role of these mesoscale interfaces. These new protocols are geared to address some of the most critical gaps impeding the efforts aimed at the accelerated and cost-effective design and development of new and improved materials. This review summarizes recent advances and identifies specific research directions that are likely to produce the maximum benefit and impact in these pursuits. |
| Keywords: | Nanoindentation Grain boundaries Hardness Indentation stress–strain curves Pop-ins |
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