Why Metal 3D-Printed Parts Develop Fatigue Cracks

Real Engineering · Explainer · 15 min · 2019 · YouTube title: The Material Science of Metal 3D Printing

Why it's here

Commenters point to it whenever 3D-printed metal parts come up, as a clear explanation of why they have poor fatigue life and material defects.

What it covers

Real Engineering explains the materials science behind metal 3D printing, including crystal structure, laser sintering, and why printed parts develop fatigue cracks. It shows how process imperfections limit the strength of printed metal.