Fabrication of Spherical High-Nitrogen Stainless Steel Powder Alloys by Mechanical Alloying and Thermal Plasma Spheroidization

摘要

This paper describes the results of experimental studies on the treatment of Fe-23Cr-llMn-lN high-nitrogen stainless steel powder alloys, synthesized by the mechanical alloying (MA) of elemental powders in the flow of a radio frequency thermal plasma. The as-milled powder with irregular particles were successfully converted into spherical high-nitrogen stainless steel powder alloy. Measurement of the residual nitrogen content in the obtained powder, shown that during the plasma spheroidization process, part of the nitrogen escapes from the alloy.