| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Additive Manufacturing Modeling and Simulation: AM Materials, Processes, and Mechanics
|
| Presentation Title |
Creep Modeling of 3D Printed 718 Nickel Alloys |
| Author(s) |
Harshal G Dhamade, Abhilash Gulhane, Jian Zhang, Bong-Gu Kim, Yeon-Gil Jung, Jing Zhang |
| On-Site Speaker (Planned) |
Jing Zhang |
| Abstract Scope |
In this work, a finite element based creep model for additively manufactured 718 nickel alloys is developed. Using a user defined creep subroutine with the Liu-Murakami and Kachanov-Rabotnov isotropic creep damage formulation, the model is capable to simulate the whole creep range, including the secondary and tertiary creep stages. The model was firstly validated using wrought 316 stainless steel material. Then the model is applied to 718 nickel based alloy fabricated using selective laser melting. The model predictions show a good agreement with the experimental creep data. The model developed in this work can be used to predict the creep behavior for 3D printed metals under uniaxial loading conditions. |