| About this Abstract |
| Meeting |
6th World Congress on Integrated Computational Materials Engineering (ICME 2022)
|
| Symposium
|
6th World Congress on Integrated Computational Materials Engineering (ICME 2022)
|
| Presentation Title |
Predicting As-Built Additively Manufactured Microstructures and Residual Stress Using the CAFE Model |
| Author(s) |
Kirubel Teferra, Lukasz Kuna, David Rowenhorst |
| On-Site Speaker (Planned) |
Lukasz Kuna |
| Abstract Scope |
As a result of the high dimensional space associated with additively manufacturing (AM) build conditions, it is advantageous to have predictive models capable of mapping laser parameters to a material’s microstructural state. In prior work, an implementation of the cellular automata finite element (CAFE) model optimized for AM processing has been developed and validated for bulk material regions for powder bed fusion 316L in terms of polycrystalline grain morphology and crystallographic texture. In the present work, this model is extended to consider the effects of free surface and corner conditions commonly found in AM builds of struts or thin walls, where contouring scan strategies are employed to eliminate deleterious artifacts. Additionally, the residual stress in the as-built microstructures is calculated by coupling the CAFE model to a finite element model computing the thermally driven stress fields. This presentation details the implementation and demonstrates its validation. |
| Proceedings Inclusion? |
Definite: Other |