About this Abstract |
Meeting |
Materials Science & Technology 2020
|
Symposium
|
Additive Manufacturing: Materials, Alloy Development, Microstructure and Properties
|
Presentation Title |
Multi-objective Optimization of Binder Jetting Process Parameters for the Co-Cr-Mo Alloy |
Author(s) |
Ahmet Selim Koca, Baris Kirim, Recep Onler, Emrecan Soylemez |
On-Site Speaker (Planned) |
Emrecan Soylemez |
Abstract Scope |
Binder jetting additive manufacturing enables manufacturing complex geometries for a variety of materials. Identifying favorable binder jetting process parameters is the key to obtain an acceptable final product quality in terms of density, geometric capabilities, surface roughness, mechanical properties and geometric retention during sintering. In this study, a design of experiment for Co-Cr-Mo alloy based on Taguchi’s orthogonal array is employed to characterize the effects of several binder jetting parameters (i.e., binder amount, roller speed, curing time) and post-printing parameters (i.e., debinding temperature and time; sintering temperature, atmosphere and time) on final part density, shape retention and final chemical composition. A two-step optimization approach is used to identify ideal process parameters. First, Taguchi’s method is used to identify the optimal combination of process parameters to obtain favorable density and hardness, and then a genetic algorithm based multi-objective optimization approach is used to find optimal printing and sintering conditions. |