|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Beyond the Beam III
||Investigating process-structure-property relationships of 17-4 PH stainless steel fabricated via laser beam powder bed fusion (LB-PBF), laser powder directed energy deposited (LP-DED), and metal binder jetting (MBJ) methods
||P.D. Nezhadfar, Benoit Verquin, Fabien Lefebvre, Christophe Reynaud, Maxime Robert, Paul R Gradl, Shuai Shao, Nima Shamsaei
|On-Site Speaker (Planned)
The existing additive manufacturing (AM) methods may induce different thermal histories to the parts due to their corresponding manufacturing characteristics, causing variation in the micro-/defect-structure of the material. Therefore, it is of interest to understand the micro-/defect-structure and mechanical properties (i.e., tensile and fatigue) of materials fabricated via different AM methods. This study aims to investigate process-structure-property relationships of 17-4 PH stainless steel (SS) additively manufactured via laser beam powder bed fusion (LB-PBF), laser powder directed energy deposition (LP-DED), and metal binder jetting (MBJ). The micro-/defect-structure of laser-based AM methods (i.e., LB-PBF and LP-DED) is characterized and compared to MBJ 17-4 PH SS counterparts. Eventually, the tensile behavior and fatigue performance of additively manufactured 17-4 PH SS are evaluated and compared among different AM methods, and the results are discussed with respect to the variations in the micro-/defect-structure.
||Additive Manufacturing, Iron and Steel, Mechanical Properties