Nitrogen as Alloying Element in Steels. II : On the Effect of Nitrogen on Blue-Brittleness in Steels

To ascertain the effect of nitrogen on the blue-brittleness in carbon steels, usual tensile tests were carried out at temperatures above room temperature up to 300°, and it was found that nitrogen was the principal cause of this phenomenon, although the brittleness due to carbon was seen at a high temperature range in steels containg low nitrogen