| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Materials Design and Alloy Development II
|
| Presentation Title |
CALPHAD Aided Design of Aluminum Alloys for Additive Manufacturing |
| Author(s) |
Emily E. Moore, Zachary C. Sims, Orlando R. Rios, Scott K McCall, Aurélien Perron |
| On-Site Speaker (Planned) |
Emily E. Moore |
| Abstract Scope |
The development of new Aluminum alloys to include Cerium is currently being investigated to mitigate the mining-economics of rare earth elements. Thermochemical models using the CALPHAD (CALculation of PHAse Diagrams) method aid in alloy design for additive manufacturing by predicting the phase-behavior of multi-component systems to achieve the desired chemical makeup of an alloy. A thermodynamic database that covers the description of the multi-component Al-Ce-Cu-Fe-La-Mg-Ni-Si-Zn-Zr system has been developed. Equilibrium calculations and Scheil simulations are performed to elucidate phase relations for the development of two sets of alloys: the Al-Ce-Mg-Si (Ce-modified A-356) and Al-Ce-Cu-X, with X=Si,Fe,Mg alloy. In coupling thermochemical models with experiment, two newly developed Al-3.5Ce-0.4Mg-7Si and Al-19Ce-0.9Mg-1.1Si alloys that exhibit improved mechanical properties are presented.
Prepared by LLNL under Contract DE-AC52-07NA27344. Research supported by CMI, an Energy Innovation Hub funded by the U.S. DOE, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office.
LLNL-ABS-779577 |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |