| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Effects of Cu on Microstructure of Al7SiMgFeMn-Based Thin-Wall High-Pressure Die Casting |
| Author(s) |
Fei Xue, Yang Huo, Joy H. Forsmark, Mei Li |
| On-Site Speaker (Planned) |
Fei Xue |
| Abstract Scope |
Aluminum-based alloys are extensively used in automobile industry due to their low-cost and excellent physical/mechanical properties. Manufacturing thin-wall components (<3mm) with high-pressure die casting (HPDC) is increasingly demanded for large structural casting to consolidate parts and reduce cost. To develop more castable and high-strength alloys, the microstructure of two Al7SiMgFeMn alloys with low (<0.02wt.%) and high (0.5wt.%) Cu additions was studied. In the low-Cu alloy, two types of intermetallic compounds were found between Al dendrite and eutectic with respectively higher Mg and Fe/Mn concentrations. Upon higher Cu addition, both types of compounds were smaller in size but higher in number densities, and an additional Cu-rich layer was frequently evident on the FeMn-rich phase. The size of Al dendrite was also clearly decreased in the high-Cu alloy. Detailed characterization is underway and the influence of Cu additions on phase formation will be discussed together with the implications for HPDC alloy design. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Solidification, Characterization |