Abstract
The value of the nitrogen compositional stability coefficient has been determined for the alloys of the Fe-Cr-Mn-Mo-N system obtained by self-propagating synthesis, namely, aluminothermy under nitrogen pressure. It is shown that the heat treatment of the alloy containing 14.3 wt.% of chromium, 12.2 wt.% of manganese, 4.0 wt.% of molybdenum and 0.92 wt.% of nitrogen at 1250°C for 2 h leads to the dissolution of a pseudo-perlitic structure (ferrite-nitride mixture) and complete austenization of samples. In this case, the alloy hardness decreases from 255 to 208 HB. The obtained results permit to predict the maximum possible content of nitrogen in continuous ingots (without bubbles and gas porosity in the volume) and, consequently, the structural-phase composition of alloy and optimal regimes of alloying. A method based on iterative calculation is proposed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
