| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Light Alloys, Advanced Forming Processes and Characterization
|
| Presentation Title |
Microstructure and Mechanical Analysis of a High Pressure Die Cast Recycled AlSi10MnMg(Fe) Alloy |
| Author(s) |
Biswajit Dalai, Simon Jonsson, Manel da Silva, Liang Yu, Jörgen Kajberg |
| On-Site Speaker (Planned) |
Biswajit Dalai |
| Abstract Scope |
The current work investigated microstructure evolution in a recycled secondary Al alloy processed by high pressure die casting (HPDC) and the resultant mechanical properties. The Mn:Fe ratio in the studied alloy was able to suppress the formation of detrimental β-Fe phase via evolution of less harmful α-Fe phase. HPDC produced a typical “skin” layer of fine α-Al phases at the casting surface. However, the formation of skin was relatively irregular, which was supposed to be produced by an inhomogeneous molten metal flow. The overall hardness distribution profile through the thickness of the casting followed the evolution of α-Al and Al-Si phases. The results from uniaxial tensile tests proved that the skin layer, on one hand, improves the strength of the castings. Whereas, removal of skin layer, on the other hand, manifested better and more consistent ductility by supposed removal of the casting defects formed in the outer layer. |