About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
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| Symposium
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Fracture and Deformation Across Length Scales: Celebrating the Legacy of William Gerberich
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| Presentation Title |
Plasticity Effects and Fracture at the Microscale |
| Author(s) |
Nathan A. Mara, Kevin Schmalbach, Youxing Chen, Eric Hintsala, William Gerberich |
| On-Site Speaker (Planned) |
Nathan A. Mara |
| Abstract Scope |
Professor William Gerberich made invaluable contributions to the field of fracture at length scales ranging from centimeters to nanometers. Here we present collaborative work published with Professor Gerberich over the past few years. We show that sample size effects on the mechanical response present major challenges in correlating microscale measurements to macroscale measurements, especially for ductility and fracture. For brittle materials with small plastic zone size (e.g., Si), microbeam bending shows promising results. For semi-brittle (e.g., W) materials, the plastic zone size becomes comparable to the sample dimension and conventional analysis methods prove difficult to apply. We address the challenges of diminished sample size to evaluating fracture behavior at the microscale through investigation of the Ductile-to-Brittle Transition (DBT) in Si, SiC, and W. With the DBT as our benchmark to bulk fracture behavior, we present the interplay of sample size with the onset of increasing plasticity on fracture behavior. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, High-Temperature Materials, Nanotechnology |