| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Self-organizing Nano-architectured Materials
|
| Presentation Title |
Bicontinuous Structure Formation by Peritectic Melting |
| Author(s) |
Mingwang Zhong, Longhai Lai, Alain S. Karma |
| On-Site Speaker (Planned) |
Mingwang Zhong |
| Abstract Scope |
Dealloying is by now a well-established synthesis method to produce open nanoporous or bicontinuous structures. Most dealloying methods explored to date, from electrochemical to liquid metal and vapor phase dealloying, involve the selective dissolution of one element of a base alloy into a dealloying medium such as an electrolyte, a liquid metal, or a vapor. Recent experiments have suggested that bicontinuous structures can also be produced by simply melting a binary peritectic alloy without the need of a dealloying medium. However, the mechanism of dealloying in this case remains unclear. This talk will present the results of a phase-field modeling study of peritectic melting of Ti-Ag alloys. The results reproduce the observed formation of interpenetrating Ag-rich and Ti-rich phases and shed light on the mechanism of nano-/micro-structural pattern formation by peritectic melting. Similarities and differences between liquid metal dealloying and peritectic melting will be emphasized. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Phase Transformations, Modeling and Simulation, |