Jennifer Bourn. This post is part of the Color Meaning Blog Series, detailing the meanings associated with colors such as red, orange, yellow, green, blue, purple, grey, black, white, brown, pink, turquoise, gold, silver, and beige.
The effect of replacing argon by nitrogen was investigated for the purÂ­pose of reducing welding costs. The study reveals that nitrogen can very well be used to replace argon for purging in pipe welding without any adverse effects on the properties of the unstabilized austenitic stainless steels.
In austenitic welding materials a determined amount of delta-ferrite is aimed to reduce the tendency of hot cracky. A material without delta-ferrite is bad for hot forming at increased temperatures. Nitrogen in the steel suppresses the formation of delta-ferrite.lpha-and delta-iron are both cubic body centered. In the microstructure of austenitic chromium-nickel and chromium-nickel-molybdenum-steels is occasionally a little amount of ferrite determineable.