The article considers etch pits that appear in metals and alloys during metallographic etching as an artifact. optical contrasting tools capabilities, such dark field, polarized light, differential interference contrast detecting pits, are demonstrated.

Threads and fibers of different origin are considered as artifacts sample preparation metallographic sections, well samples some materials. The role various methods optical contrasting – dark‑field illumination, polarized light in the analysis paper, natural artificial is illustrated. presented materials can be used by scientists to identify errors preparation, describe non‑traditional objects.

Microstructural examination can provide a rich tapestry of information about the processing and application history of a metal component. For this reason, microstructural characterization is a fundamental tool for failure analysis of these components. To reduce costs and accommodate demands for smaller packaging, many applications currently use metallic components where the critical dimensions ...

Reticulated mesh samples of Co-29Cr-6Mo alloy and Ni-21Cr-9Mo-4Nb alloy (625) and stochastic foam samples of Co-29Cr-6Mo alloy fabricated by electron beam melting were characterized by optical metallography, and the dynamic stiffness (Young's modulus) was measured by resonant frequency analysis. The relative stiffness (E/Es) versus relative density (ρ/ρs) plotted on a log-log basis resulted in ...