| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
A-154: Thermodynamic Calculation and Characterization of Carbide Precipitation in Laser-deposited Material for High Speed Steel Alloy |
| Author(s) |
Ali Jammal, Gang Wang, Songge Yang, Yu Zhong, Yiming Rong |
| On-Site Speaker (Planned) |
Gang Wang |
| Abstract Scope |
The laser cladding of the T15 high speed steel was accomplished and its typical microstructure was determined. The microstructure characterization of the clad layer showed three phases of microstructure, planar, cellular and equiaxed zones. Electron probe micro-analyzer (EPMA) showed high content in alloying elements at the cellular and equiaxed zones that contained V, C, Cr and W. Further, the analysis at the inter-granular zone presented the highest concentration in elements such as Mo, Cr and W. This showed the presence of carbides which were identified as MCI and M6C at the cellular zone, and M7C3 and M27C6 at the equiaxed and inter-granular zones. The alloying elements characterization starting from the substrate and passing through the clad layer identified the austenite matrix and revealed the fluctuation in the alloying elements content. Equilibrium phase diagram thermodynamic calculation proved the presence of MCI, M6C and M27C6 which precipitated respectively as the solidification proceeded. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |