| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
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Atomistic Simulations Linked to Experiments to Understand Mechanical Behavior: A MPMD Symposium in Honor of Professor Diana Farkas
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| Presentation Title |
Self-Healing by Amorphous Shear-Band Recovery in Crystalline Al-Sm Materials |
| Author(s) |
Xuanxin Hu, Nuohao Liu, Izabela Szlufarska |
| On-Site Speaker (Planned) |
Xuanxin Hu |
| Abstract Scope |
Longevity is one of the key importance in structural metallic materials. Considering that it might be unrealistic to prevent stress-induced damage, self-healing could provide an alternative pathway to extend material's lifetime. Self-healing has been explored in metals reinforced with shape-memory-alloy (SMA). However, the poor interfacial bonding between SMA and matrices resulted in little strength recovery. Here, we discovered that solid-solid phase-transformation Al-Sm system containing stress-induced amorphous shear bands provides a promising strategy for strength recovery through self-healing. Based on a combination of experiments and atomistic simulations, we demonstrated that amorphous shear bands in Al-Sm system could transform back to crystalline structure during annealing at temperatures as low as 150℃. This self-healing based on amorphous-to-crystalline phase transformation overcomes the interfacial problem in SMA systems, resulting in the recovered materials having similar mechanical properties to undeformed samples. Our findings provide a potential strategy for design of easy-self-healing materials with recyclable mechanical properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Recycling and Secondary Recovery, Phase Transformations |