Friction and wear behaviors of a high nitrogen austenitic stainless steel Fe-19Cr-15Mn-0.66N

Abstract

The friction and wear behaviors of a Fe-19Cr-15Mn-0.66N high nitrogen austenitic stainless steel (HNSS) were investigated. Tribological investigations were carried out under different applied loads of 5 N, 10 N, 15 N and 20 N. Scanning electron microscope (SEM) and laser scanning confocal microscope (LSCM) were used to understand the wear mechanisms under different loads and the reasons for the improved wear resistance. The lower friction coefficient and improved wear resistance were observed with the increase in applied loads. Under a higher load, the friction enhanced the work hardening ability of HNSS, which in turn improved its surface hardness and thus the increased wear resistance of HNSS.

Microstructure and Properties of ER50-6 Steel Fabricated by Wire Arc Additive Manufacturing

“…The depth recovery ratio ( ŋ h ) was used to characterize the elastic behavior of samples. The value of ŋ h was defined as follows [ 16 , 17 ]: …”

Wear and Corrosion Resistance of CoCrFeNiSiMoW Medium-Entropy Alloy Coatings on Q235 Steel

“…After the friction tests, images of wear scars were observed by a laser scanning confocal microscope (LEXT, OLS400 LSCM, Tokyo, Japan) and a scanning electron microscope (SEM, JEOL, JSM-6480, Tokyo, Japan). The wear rates (mm 3 N −1 •m −1 ), represented by W S , can be calculated by the following formula [22]:…”

Progress in Catalytic Pyrolysis of Oil Shale

“…Catalysts used for modification are always inactivated by coke deposition, but in situ high-temperature treatment in the air effectively removes the coke from the catalyst surface to make it highly active after the devulcanization operation. Zhang et al [ 36 ] and Qiao et al [ 37 ] used Ni-Mo/Al 2 O 3 catalyst to conduct fixed-bed mild hydrotreating for shale oil. The results show that under the condition of catalytic hydrodesulfurization, the sulfur removal rate of shale oil is 84.6%, and the yield of upgraded high-quality oil is up to 96.2%.…”