Interstitial nitrogen solid solution
Nitrogen atoms are inserted into interstitial sites of the metal lattice, increasing strength and distorting the lattice. This affects mechanical properties and resistance of austenitic steels.
Physical-Chemical Mechanism of Action
Nitrogen atoms are inserted into interstitial sites of the metal lattice, increasing strength and distorting the lattice. This affects mechanical properties and resistance of austenitic steels.
Metallurgical Relevance & Welding Risks
Interstitial nitrogen solution improves strength and toughness of austenitic steels, but also prevents austenite-to-perlite transformation. Excessive nitrogen content can lead to increased hardness and reduced formability.
Workshop Practice & Instructions
To utilize interstitial nitrogen solution, nitrogen content should be between 0.1% and 0.3%. If nitrogen content is too high (above 0.5%), austenite-to-perlite transformation can be prevented, reducing formability.