Question

powder bed fusion technologies (pbf)
use the information below to answer the question.
powder bed fusion (pbf) only uses metal. there is no sand, plastic, or polymer. powder bed fusion (pbf) is not a desktop technology, as it is a big machine that uses a lot of heat. while selective laser sintering (sls) uses a bed of polymer powder, pbf uses a metal powder. pbf uses support material to help keep the print from warping. unlike binder jetting, the print is finished when its taken out of the powder box and does not need to be placed in a furnace.
there are two different fusion bed technologies: direct metal laser sintering and selective laser melting.
direct metal laser sintering

• fuses the particles together
• there isnt a full melt
• uses alloy metals

selective laser melting

• melts the parts together
• it creates a homogeneous part
• uses stainless steels or titanium

what types of metals are used for direct metal laser sintering?
dissimilar metals
alloy metals
rare metals
copper metals

Explanation:

The text mentions that Direct - Metal Laser Sintering (a type of Powder Bed Fusion technology) uses alloy metals.

Answer:

alloy metals