| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing Modeling and Simulation: Microstructure, Mechanics, and Process
|
| Presentation Title |
Residual Stress Induced Cracking Modeling |
| Author(s) |
Kevin A. Glunt, Wen Dong, Santanu Paul, Albert C. To |
| On-Site Speaker (Planned) |
Kevin A. Glunt |
| Abstract Scope |
Figuring out how to additively manufacture parts using a wider range of materials is essential for the growth of the AM industry, yet these materials can be brittle and subject to cracking under large residual stresses. These stresses are produced from the heating and cooling cycle during the Laser Powder Bed Fusion (L-PBF) process. Modeling is critical for identifying which printing features will cause a significant change in the chances of cracking within the part. The simulation will save time from the costly test prints generally used. A multi-physics model was developed in ANSYS to properly show if cracking will occur under specific printing conditions. The simulation results are compared to experiments for L-PBF processed Stellite 6, a widely used cobalt base alloy that is notoriously difficult to process using L-PBF due to its susceptibility to cracking. |