About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Alloys, Processing and Characterization
|
Presentation Title |
Microstructure and Mechanical Response of Artificially Aged Al-Mg-Si Alloys: Experiments and Modeling |
Author(s) |
Yoojin Kim, Sharvan Kumar |
On-Site Speaker (Planned) |
Yoojin Kim |
Abstract Scope |
Three Al-Mg-Si alloys with different Mg and Si content were selected to isolate the effect of alloying elements on microstructure evolution during isothermal aging and the consequential influence on mechanical response. Microstructure evolution in these alloys was investigated by transmission electron microscopy (TEM) and precipitate type, morphology and size distribution were quantified; an analytical model for precipitation kinetics of β" precipitates with a cylindrical morphology and an aspect ratio obtained from experiment, has been developed to predict precipitates size distribution, volume fraction and residual Mg and Si content in solid solution and compared to experimental results. Single crystal micropillars were obtained in the T6 condition and compressed to obtain CRSS and early stage hardening. The precipitation model developed above is coupled to a strength model to predict the CRSS as a function of alloy chemistry and crystallographic orientation and findings are compared to experiments. |
Proceedings Inclusion? |
Planned: Light Metals |