Dry Sliding Wear Mechanisms of the High Nitrogen Austenitic 18Cr-18Mn-2Mo-0.9N Steel at Different Applied Loads

Yong Suk Kim; Seung Duk Kim; Sung Joon Kim

doi:10.4028/www.scientific.net/AMR.26-28.37

Paper Titles

Metal Injection Molding Method of Ni-Free Austenitic Stainless Steel II - Microstructure and Mechanical Properties
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Aqueous Corrosion Characteristics of Iron Aluminides
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Continuous Cooling Transformation Behavior of High Strength Low-Alloyed Cold Rolled Sheet Steel
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Study of High Temperature Wear Resistance of Hot Work Steel for Magnesium Alloy Die Casting
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Dry Sliding Wear Mechanisms of the High Nitrogen Austenitic 18Cr-18Mn-2Mo-0.9N Steel at Different Applied Loads
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Fluid-Structure Coupled Analyses of Composite Wind Turbine Blades
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Cementite Decomposition of Pearlitic Steels during Cold Drawing
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The Texture Evolution of Dual Phase Steel Sheets
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Effects of Finishing Rolling Temperature on the Microstructural Behavior for Fe-0.1C Steel as a Function of Niobium Content
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Dry Sliding Wear Mechanisms of the High Nitrogen Austenitic 18Cr-18Mn-2Mo-0.9N Steel at Different Applied Loads

Abstract:

Sliding wear mechanisms of the solution treated 18Cr-18Mn-2Mo-0.9N high nitrogen steel (HNS) were studied. Room-temperature dry sliding wear tests of the steel were carried out at various applied loads to explore the mechanism as a function of the load. The wear rate of the steel increased with the increase of the load; however, the increase rate was not constant. The rate increased slowly at low loads, rapidly at intermediate loads, and finally, the increase-rate became low again at high loads. Worn surfaces, their cross sections, and wear debris were examined, and phases of the heat-treated HNS as well as the wear debris were identified to find out the mechanism. The wear of the steel was found to be controlled by the tribo-oxidation, strain-induced phase transformation, and reverse transformation due to temperature rise on a wearing surface. The influence of each mechanism on the rate varied depending on the magnitude of the applied load.