|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||ICME Gap Analysis: Structural Materials for Automotive Applications
||Progress and Gaps in Thermodynamic Modeling for the Development of Advanced Cast Aluminum Alloys using Integrated Computational Materials Engineering
||Mike J Walker, Andrew Bobel, WeiWei Zhang, Nick Hatcher, Abhinav Saboo, Dana Frankel, Kyoungdoc Kim, Christopher Wolverton
|On-Site Speaker (Planned)
||Mike J Walker
For the development of improved alloys using ICME, the thermodynamic databases must accurately reflect the potential contribution of both the major and minor elements on the phase stability and solid solution strengthening in the alloy. The common precipitate phases in aluminum alloys such as the theta phase, the beta phase, and the Q phase have been well documented in the literature. However, thermodynamic databases do not accurately reflect solubility limits and phase boundaries or the contribution of minor elements. High-throughput DFT calculations have identified new phases, however the lack of a full thermodynamic description of novel phases makes it difficult to predict their stability. This talk will highlight advances in thermodynamic databases with an emphasis on a re-calibration of the Q-phase and a review of remaining discrepancies and gaps in aluminum alloy descriptions. Finally, the challenges in predicting the effects of minor elements on phase stability will be reviewed.