Additive manufactured versus cast AlSi10Mg alloy: Microstructure and micromechanics

This study aims at assessing the effect of solution heat treatment (at a temperature just below eutectic temperature) followed by various cooling rates on microstructure and mechanical properties additively manufactured AlSi10Mg cast counterpart. The were evaluated using depth-sensing nanoindentation platform. parts solutionized 540 ​°C for 2 ​h water quenching, air cooling, furnace cooling. Results show extensive microstructural changes (e.g. size morphology eutectic-silicon phase) evolutions in heat-treated materials relative to as-printed as-cast ones. Besides, micromechanical broadly alter additive manufacturing conditions. Depending condition, mentioned cycles directly affect both starting with silicon fragmentation, then spheroidization, coarsening. evolution affects local studied materials. results this provide insights into control hence alloy addressing suitable cycles. study, first time, assesses compares post-fabrication conditions an alloy.