Additive manufacturing with multi-material design offers great possibilities for lightweight and function-integrated components. A process chain was developed in which hybrid steel–steel-components high fatigue strength were produced. For this, a material combination of stainless powder Rockit® (0.52 wt.% C, 0.9% Si, 14% Cr, 0.4% Mo, 1.8% Ni, 1.2% V, bal. Fe) cladded onto ASTM A572 mild steel b...

Gaseous carbonitriding of AISI 52100 steel was investigated under various processing conditions. The process parameters studied involve ammonia content (2.5–7.5 vol%), carbon potential (0.8–1.2%), and temperature (780–880 °C). carbon/nitrogen concentration-depth profiles that developed during were determined by light element analysis. microstructural residual stress evolution, the thermal-mecha...

Greased bearings in electric motors (EMs) are subject to a wide range of operational requirements and corresponding micro-environments. Consequently, greases must function effectively these conditions. Here, the tribological performance four market-available EM was characterized by measuring friction wear silicon nitride sliding on hardened 52100 steel. The evaluated had similar viscosity grade...

18 polymers were characterized with respect to their friction and wear behaviour in contact with steel in environments of air and water. These were six unfilled materials, i.e. polyamide 66 (PA 66), polyoxymethyfene (POM), polyethyleneterephthalate (PETP), polyetheretherketone (PEEK), polyphenylenesuiphide (PPS) and polyethe~mide; also, the same base materials filled with poIytetrafluoroethylen...

This paper investigates the effect of different cutting parameters (cutting speed, feed rate, and depth of cut) on cutting force components and material removal rate (MRR) in dry and wet hard turning processes. The workpiece material, hardened alloy steel AISI 52100, was machined on a CNC lathe with coated carbide tool under different settings of cutting parameters. Three cutting parameters eac...

Abstract In the present study microscaled samples were investigated using multi-frequency eddy current analysis with high spatial resolution. Multi-frequency analyses performed different exciting frequencies have shown that local signal distribution depends on geometry of samples. Due to this fact, positioning sensor may influence material state qualification. The investigation several heat tre...

Tribological properties of lithium potassium titanate (PT), molybdenum disulphide, and tungsten disulphide-dispersed mineral oil (MO) were investigated. The sample containing 2 wt.% WS2 exhibited the lowest coefficient friction. However, wear scar diameters additivated samples very narrow. Extreme pressure enhanced with addition additives. rolling contact fatigue results better life balls in Mo...

This paper reports research on the frictional behavior of a textured surface against several materials under dry and lubricated conditions, this is aimed to provide design guidelines texturing for wide-ranging industrial applications. Experiments were performed tribo-tester with facility simulating A ball-on-plate model in reciprocating motion dry, oil-lubricated, water-lubricated conditions. T...