About this Abstract |
Meeting |
Materials Science & Technology 2020
|
Symposium
|
Additive Manufacturing: Materials, Alloy Development, Microstructure and Properties
|
Presentation Title |
Microstructural Evolution and Mechanical Properties of Cast and Additive Manufactured AlSi10Mg at Different Heat-treated Conditions |
Author(s) |
Shawkat Shakil Imam, Ahmed Paridie, Meysam Haghshenas |
On-Site Speaker (Planned) |
Shawkat Shakil Imam |
Abstract Scope |
This study aims at assessing the effect of solution heat treatment (at a temperature just below the eutectic temperature) followed by various cooling rates on microstructure and the mechanical properties, employing a depth-sensing nanoindentation platform, of additively manufactured AlSi10Mg and the cast counterpart. To this end, cast and additively manufactured parts were solutionized at 520°C for 2 h followed by water quenching, air cooling, and furnace cooling. Results show extensive evolutions in the microstructure (e.g. size and morphology of eutectic-silicon phase) and the mechanical properties of the heat-treated materials relative to the as-printed and as-cast materials. Upon solutionizing treatment, the eutectic-silicon is first fragmented, then spheroidized, and finally coarsened when cooled with slow rates. The microstructural evolution directly affects the mechanical properties of the studied materials. The results of this study provide insights into the control of microstructure and hence mechanical properties of AlSi10Mg alloy by addressing suitable heat treatment. |