|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Computational Design and Simulation of Materials (CDSM 2018): Meso/Macroscale Simulations
||2D Simulation of Gradient Zone Formation in Cemented Carbides with Conventional and Alternative Binders
||Armin Salmasi, Henrik Larsson, Stella Sten, Andreas Blomqvist
|On-Site Speaker (Planned)
Cemented carbide turning inserts with a gamma-free (cubic carbonitride) gradient zone combines wear resistance with a tough crack-resistant surface. Coating of inserts increases the wear resistance. Cooling of inserts from high temperature after chemical vapor deposition results in propagation of thermal cracks. To prevent failure, a tough gradient layer is formed on the surface of the substrate by controlling the multi-component diffusion in the liquid binder phase during the sintering. Diffusion along two spatial directions form a so-called gamma cone structure, which strengthens the cutting edge. Spatial simulation of diffusion allows us to model geometrical effects during the sintering of the insert. In this work, we will model the formation of gradient zone in different cemented carbide grades with conventional and alternative binders. Furthermore, we will design and sinter experimental grades to check the validity of our simulations.
||Planned: Supplemental Proceedings volume