The microstructure and tribological behavior of a pre‐cold‐deformed 0.90 % nitrogen containing stainless steel

Abstract

The microstructure of a 0.90 % nitrogen containing stainless steel pre-deformed by cold rolling was analyzed using optical microscopy, transmission electron microscopy and X-ray diffraction; Then the tribological behavior of nitrogen containing stainless steel was investigated using sliding wear method in air and in sodium chloride solutions and the worn surface was observed by a scanning electron microscopy. The results indicated that nitrogen containing stainless steel possessed stable single-phase austenite and the number of mechanical twins increased with increasing cold deformation. In dry wear tests, when the GCr15 bearing steel ball and 304 stainless steel ball acted as the counterpart, the wear resistance of nitrogen containing stainless steel decreased gradually and kept nearly the same, respectively, with increasing cold deformation. The corrosion wear resistance of nitrogen containing stainless steel was improved gradually by cold deformation in the 0.9 % sodium chloride solution and 3.5 % sodium chloride solution, while their friction coefficients were nearly equal.

Friction and Wear Behaviors of Fe-19Cr-15Mn-0.66N Steel at High Temperature

“…High-nitrogen austenitic stainless steel (HNSS) can be used for non-magnetic drill collars in oil exploitation, bearing steels for automobile industry, and many other applications due to its excellent properties, i.e., high strength, good ductility, and superior corrosion resistance [1][2][3][4][5][6]. However, because of harsh service conditions, such as high temperature, heavy load, and high velocity, the demand for surface hardness and wear resistance is enhanced [7,8].…”