| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Recent Advances in Titanium Science and Technology: MPMD/SMD Symposium Honoring Professor Dipankar Banerjee
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| Presentation Title |
Internal Friction of Steel: The Microstructural Origin |
| Author(s) |
Sanjay Manda, Ajay S. Panwar, Indradev Samajdar |
| On-Site Speaker (Planned) |
Indradev Samajdar |
| Abstract Scope |
Damping, in a viscoelastic (or anelastic) material, is characterized by the dissipation of mechanical energy. The mechanism of damping originates from internal friction. The latter depends on various microstructural parameters such as solute, texture, dislocations, and grain/phase boundaries. For complex microstructures, decoupling of microstructural inputs to internal friction was not possible only with our dynamic mechanical analysis (DMA) measurements. To overcome this, we have used multiscale Kinetic Monte Carlo (KMC), molecular dynamics (MD) simulations. In particular, we have studied different aspects of Snoek and dislocation-enhanced Snoek peak. Hence, it is apparent that internal friction can be utilized as a critical characterization tool. In this regard, we have extended our study to hydrogen embrittlement and correlated it to internal friction. In particular, we have investigated Snoek-Koster peaks arising from hydrogen-dislocation interactions. In summary, internal friction is a potential tool to quantify the role of different microstructural features. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Iron and Steel, Modeling and Simulation |