Influence on nitrogen on the response to compression in Hadfield steels

Our previous work presented an hypothesis stating that the effects of carbon are combined with nitrogen in solution. The role of nitrogen in Hadfield steels is a milestone in the study of the deformation and hardening mechanisms for these steels, and does not jeopardize the studies undertaken to date, but rather complements them, due to the almost under appreciated and unknown influence of nitrogen on them. This work fully corroborates this hypothesis, since the nitrogen content in Hadfield steels is clearly important. The coefficient of hardening from deformation in compression was found to increase in value by 100%, after increasing the nitrogen content from 80 ppm to 620 ppm. The steels obtained were submitted to compression tests following ASTM E9-87 and compared with results obtained by H. Sehitogly and D. Canadinc with Hadfield monocrystals with similar chemical composition to those obtained in this investigation (CW)