
▲ 5 r/metallurgy
Fracture surface
Curious to know what your thoughts are on this fracture surface, in terms of crack origin in particular. Material is 7075-T73 and this is part of a helicopter primary structure
u/Wolf9455 — 1 month ago

Curious to know what your thoughts are on this fracture surface, in terms of crack origin in particular. Material is 7075-T73 and this is part of a helicopter primary structure
If possible watch with sound
Iron is ferromagnetic and by heating you distort the arrangement of electron spins that make it magnetic, and it regains magnetism upon cooling.
The 500-meter-long rails rest on a rack of rollers and are rigidly secured ONLY at the center tie-down car, allowing the ends to slide freely and negotiate curves.