|About this Abstract
||10th International Symposium on Superalloy 718 and Derivatives (2023)
||Superalloy 718 and Derivatives
||Microstructure and Mechanical Properties of Selective Laser Melting Processed TiC/GTD222 Nickel-based Composite
||Rui Wang, Zhe Zhang, Peng Zhang, Hailong Qin, Zhongnan Bi
|On-Site Speaker (Planned)
In this study, the microstructure and deforming mechanisms of selective laser melted GTD222 and TiC/GTD222 composite were studied. The results show that the TiC/GTD222 composite has finer grains and more precipitation phases. Meanwhile, TiC/GTD222 composite has higher yield strength both at room and high temperatures, which can be mainly attributed to the synergistic effect of the TiC strengthening and γ′ strengthening. The deformation mechanisms of TiC/GTD222 composite at 800 °C were identified as isolated stacking faults shearing the γ′ phase, continuous stacking faults shearing the γ and γ′ phases, dislocations cutting γ′ phase, and dislocation slip within the γ matrix. This study provides insights for understanding the influence of TiC particles on the deformation mechanisms of additive manufactured nickel-based alloys.
||Definite: At-meeting proceedings