English to Russian Tech/Engineering Metallurgy / Casting Hot isostatic Pressing

The quality of additively manufactured metallic microlattice materials is reported to be dependent
on process parameters. These fabricated structures have inherent defects such as micro-voids. The
build angle of the part is likely to affect its microstructure and mechanical properties due to the
stacking-layered-fused nature of the metal powder in Powder Bed Fusion (PBF) process, which
is essentially a vertical building paradigm. In this study, two Ti6Al4V microlattice structures,
one with Body Centered Cubic (BCC) and another with additional vertical pillar (BCC-Z) unit
cell, were manufactured using Electron Beam Melting (EBM) method. The initial structures
were examined using the Neutron imaging instrument DINGO at ANSTO, in order to detect
large internal defects if possible. While the effects of build angle may be avoided only with great
difficulty, Hot Isostatic Pressing (HIP) was conducted as a suitable post-processing step to mitigate
these effects by removing porosity. Since both the structures are made up by interconnecting
struts, representative strut-length samples were extracted before and after the HIP process and
were subjected to Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS)