About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Thermodynamics and Kinetics of Alloys
|
Presentation Title |
Accelerated CALPHAD-based Design of a 7xxx High Strength Aluminum Plate Alloy |
Author(s) |
Maria-Ioanna T. Tzini, Gregory B. Olson |
On-Site Speaker (Planned) |
Maria-Ioanna T. Tzini |
Abstract Scope |
High-strength aluminum plate alloys are widely used in the aerospace and defense industry due to their high specific strength and good workability. In comparison to the trial-and-error strategies, the design of these alloys can be significantly accelerated by using computational alloy design approaches. In the present study, CALPHAD-based ICME tools are employed for the design of an Al-Zn-Mg-Cu-Zr high-strength plate alloy, compatible with ingot metallurgy and wrought processing to a 10 cm thickness plate. Aiming in maximizing the yield strength and improving the elongation, toughness, and quench sensitivity of this alloy, specific alloy and process design criteria are applied. An Orowan precipitation strengthening model is developed to describe the hardening behavior upon aging, while the distribution of grain refining phases is predicted via thermodynamic and kinetic calculations. A multi-objective optimization problem is formulated and then the optimum composition and processing parameters are determined for the integrated system via genetic programming. |
Proceedings Inclusion? |
Planned: |
Keywords |
ICME, Aluminum, Modeling and Simulation |