SLM AlSi10Mg mechanical behaviour improvement by friction stir processing
(2018) 3rd Workshop on Metal Additive Manufacturing — Location: Liège, Belgium (28.May.2018)
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- Abstract
- The flexibility, material and time saving capabilities of metal additive manufacturing (AM) make it a very appealing technology in very diverse fields, from the medical to the aerospace industries. The latter generally requires lightweight and complex components, but, in case of structural applications, good mechanical behaviour is also needed. This additional requirement is currently often unfulfilled by metal AM parts. This work explores the possibility of post-treating metal AM parts to improve mechanical behaviour. More precisely, the friction stir processing (FSP) technology is applied to selective laser melt AlSi10Mg plates to study its potential. The objective of the project is to understand the microstructural changes that the material undergoes through the thermo-mechanical effect of FSP, linking them to variations in the damage mechanism that translates into an impact on mechanical properties (strength, ductility, fatigue resistance). Characterisation of the material by various methods, such as microscopy analysis, mechanical testing or X-ray microtomography, including in situ tensile and ex situ fatigue tomography tests, leads to the determination of the ductility improvement after applying FSP and the modification of damage mechanism that yields changes in fatigue behaviour.
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Citations
Santos Macias, J. G., Jacques, P., Van Hooreweder, B., Elangeswaran, C., Lani, F., Maire, E., Adrien, J., & Simar, A. (2018). SLM AlSi10Mg mechanical behaviour improvement by friction stir processing. Proceedings of the 3rd Workshop on Metal Additive Manufacturing. Published. 3rd Workshop on Metal Additive Manufacturing, Liège, Belgium. https://hdl.handle.net/2078.5/219892