Abstract
AbstractLaser‐based powder‐bed fusion can be combined with casting into a hybrid manufacturing process. This is done to simultaneously utilize advantages of both processes. To examine related challenges stemming from this combination when using aluminium alloys, first experiments were conducted with EN AC‐42000 alloy, an alloy common in both standalone processes. EN AC‐42000 alloy samples with different surface treatments were placed into a sand mould and cast on to with an aluminium melt. The contact region between the partially molten insert and the cast material was examined with light microscopy. The main challenges were shown to be comprised of bonding issues due to present oxides and a high porosity. The high porosity was traced back to a porosity increase in the laser‐based powder‐bed fusion insert.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have