| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cast Shop Technology
|
| Presentation Title |
Molecular Dynamics Simulations of the Evolution of Residual Stresses during Rapid Solidification of Aluminium |
| Author(s) |
Michail Papanikolaou, Konstantinos Salonitis, Mark Jolly |
| On-Site Speaker (Planned) |
Michail Papanikolaou |
| Abstract Scope |
It is well known that residual stresses are quite common in castings and they emerge due to uneven cooling conditions. Nowadays, the development of atomistic modelling techniques has allowed for the in-depth investigation of the solidification process mechanics as well as the distribution of residual stresses. In this study we have performed Molecular Dynamics simulations to investigate the evolution of residual stresses during homogeneous nucleation in pure Aluminium and their distribution over the simulation domain. A simulation box containing a large number of Aluminium atoms has been heated up and subsequently quenched under various cooling rates. The potential and kinetic energy as well as the evolution of various atom types (Face-Centred Cubic, Amorphous and Hexagonal Close Packed) has been monitored during the melting and quenching stages. The obtained results suggest that the cooling rate significantly affects the distribution and the final magnitude of residual stresses in the simulation domain. |
| Proceedings Inclusion? |
Planned: Light Metals |