Wear Resistance of Medium Carbon Steel with Different Microstructures

Abstract

In this research, the tribological properties of different microstructures of medium carbon steel produced by either an austempered process or quenched-tempered process are investigated. The as-received samples with annealed microstructure (spherodized) are austempered to obtain a bainite microstructure or quenched-tempered to obtain a tempered martensite microstructure. The tribological performance of these microstructures was studied using a ball-on-disk UMT3 tribometer. The results indicated that both bainite microstructures and tempered-martensite microstructures produced better wear resistance than pearlite microstructures. At the same hardness level, the austempered disk specimens have less cracking due to higher fracture toughness compared to quenched and tempered steel. For the disks, tempered martensite microstructures produced more plastic deformation compared with bainite microstructures. Mild abrasive wear was observed on the harder disks, however, smearing wear was observed on the softer disks. Adhered debris particles were observed on the balls.

Titanium Carbide and Vibration Effect on the Structure and Mechanical Properties of Medium-Carbon Alloy Steel

“…1 (Figure 9a). As soon as the microstructures of the samples were subjected to very strong plastic deformation, the nucleation and propagation of cracks under the surface led to the peeling of wear particles from the surface [35]. The samples after processing (No.…”

“…The physical and mechanical characteristics of the metal changed significantly. The central porosity decreased by [25][26][27][28][29][30][31][32][33][34][35][36].7%, the total chemical heterogeneity by 39.8-75%, liquation and total fracturing by 34-100%, the zone of equiaxed crystals increased by 26.5-35%, and the mechanical characteristics of the metal (tensile strength and yield strength, elongation and compression) increased by 5.5-19%. Castings from GX120Mn13 steel were obtained, which were cast into sand molds at atmospheric pressure using powder modifiers in the form of a TiN+Cr composition.…”

Effects of Repeated Heat Treatments on the Wear Resistance of Pre-Carburized Steel

“…It was discovered that the samples demonstrated similar hardness due to superior fracture toughness as compared to quenched and tempered steel. The annealed samples exhibited moderate hardness, while the quenched samples showed staining [14]. The application of thermal treatment to medium carbon steel samples (DP), designed to probe mechanical properties and corrosion resistance, resulted in a discernible increase in hardness, tensile stress, and wear resistance [15].…”

Tribocorrosion and Abrasive Wear Test of 22MnCrB5 Hot-Formed Steel

“…One of the methods of improving the durability and strength of machine elements is to use a different material with better mechanical properties [ 18 ]. Nevertheless, this type of change is not always possible, especially in the case of the influence on the steel elements of several factors.…”