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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Verification, Calibration, and Validation Approaches in Modeling the Mechanical Performance of Metallic Materials
Presentation Title Cermet Design Through Modeling Residual Stresses and Thermal Cyclic Stability
Author(s) Michael D. Sangid, Glenn R. Peterson, Youngung Jeong , Carlos N. Tomé
On-Site Speaker (Planned) Michael D. Sangid
Abstract Scope Ceramic-metal composites, or cermets, exhibit beneficial properties resulting in their use in many industrial applications. One challenge with cermets is the mismatch in the coefficients of thermal expansion (CTE) between the ceramic and metal phases that lead to residual stresses after processing, plasticity in the metal phase, plus internal stresses evolution and instability during thermal cycling. In order to inform the design of cermets, we developed a temperature-dependent, elasto-viscoplastic, self-consistent (TE-VPSC) model to simulate behavior and properties of cermets during process-induced cooling and thermal cycling. The TE-VPSC model is demonstrated as a design tool for cermets to systematically investigate the effects of process-induced microstructure variations (volume fraction of phases, grain aspect ratio, and crystallographic texture) and compositional differences (19 compositions are explored) on the residual stress, degree of plasticity in the metal phase, and thermal stability point.
Proceedings Inclusion? Planned:
Keywords Mechanical Properties, Computational Materials Science & Engineering, High-Temperature Materials

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