| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Defects and Properties of Cast Metals
|
| Presentation Title |
Deformation Induced Crack Growth in Semi-solid Die Cast Aluminum Alloys |
| Author(s) |
Shishira Bhagavath, Zhixuan Gong , Sara Nonni, Tim Wigger, Saurabh M Shah, Sebastian Marussi, Neeraj Srivastava, Shyamprasad Karagadde, Peter D Lee |
| On-Site Speaker (Planned) |
Zhixuan Gong |
| Abstract Scope |
High Pressure die casting (HPDC) is a process used for the rapid production of aluminum and magnesium alloy castings with excellent surface finish and shape conformation. Due to the extreme cooling, flow and pressure conditions prevailing during the process, the semi-sold mushy zone in HPDC is subjected to a state of complex stress. In this study, semi-solid deformation experiment of die cast Aluminum alloys were conducted to replicate the process stress conditions. The deformed samples were characterized using the X-ray radiography and tomography techniques to quantify the volume fraction, number density, and 3D distribution of the porosity and silicon particles. The results revealed the agglomeration of silicon particles in the deformed sample and subsequent growth of cracks around it. To understand this further, the role of secondary particles on mushy zone permeability and feeding was investigated. The results will help in developing better predictive models for porosity prediction in HPDC. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |