| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-9: Analysis of Mechanical Properties and Microstructural Changes in Al-6Cu Alloy with Combined Additions of Transition Elements Cr, Mn, and Zr After High-Temperature Exposure |
| Author(s) |
Hyuncheul Lee, Jaehui Bang, Nawon Kwak, Eunkyung Lee |
| On-Site Speaker (Planned) |
Hyuncheul Lee |
| Abstract Scope |
Al-Cu alloys are used in industries such as automotive due to their low density, high specific strength, and excellent heat resistance. However, their mechanical properties deteriorate above 250°C due to the coarsening of the Al₂Cu phase. To address this, previous studies investigated the effects of single and combined additions of Cr, Mn, and Zr at their maximum solubility limits on the high-temperature properties of Al-6Cu alloys. These studies showed that the formation of a core-shell structure under combined addition conditions suppressed Al₂Cu phase coarsening, thereby improving high-temperature stability.In this study, Al-6Cu alloys were cast with combined additions of Cr, Mn, and Zr at 0.2-0.6 wt%. Following T6 heat treatment, mechanical testing and SEM analysis were conducted to determine the correlation between core-shell structure formation and elemental additions. This research aims to propose optimal transition element addition conditions to enhance the mechanical performance stability of Al-6Cu alloys under high-temperature exposure. |
| Proceedings Inclusion? |
Undecided |