Showing papers in "Wear in 2014"

TL;DR: In this article, four different types of IF-MoS2 were synthesized so as to be able to differentiate the influence of both the size and the morphology of the nanoparticles on their tribological behavior.

TL;DR: In this paper, the dry sliding wear behavior of coatings prepared from one selected feedstock powder was studied up to 750°C and compared to a WC-10%Co-4%Cr coating as reference.

TL;DR: In this article, the performance of Ni3Al matrix self-lubricating composites (NMSC) with graphene nanoplatelets (GNPs) against Si3N4 ball was investigated.

TL;DR: In this paper, the authors conducted erosion tests on API X42 steel using aluminum oxide as erodent and found that the extent of material degradation is a function of the properties of abrasive particle, target material, eroderent velocity, abrasive feed rate, attack angle and environment.

TL;DR: In this paper, a discussion on predictive models with emphasis on influencing factors needed to be accounted for and how these can be incorporated in a predictive model of surface and subsurface initiated rolling contact fatigue (RCF).

TL;DR: In this paper, periodic line-like patterns with different periodicities (5, 9 and 18µm) were fabricated by laser interference patterning on stainless steel samples (AISI-304) and on 100 Cr 6 steel balls.

TL;DR: In this article, a tool wear study based on the drilling experiments on CFRP/Ti stack as well as its individual plates (CFRP-only and Ti-only) with uncoated and coated tungsten carbide drills is presented.

TL;DR: In this article, the authors apply optical microscopy and scanning electron microscopy to investigate the physical evidence of crack initiation, crack propagation and material removal mechanisms during scratch tests, and employ finite element simulations of crack growth during macroscopic scratch tests to assess the influence of the blade back-rake angle, the friction coefficient between the blade and the material and the wear flat of a blade on the scratching forces, thus testing the robustness of the Linear Elastic Fracture Mechanics scratch model.

TL;DR: In this paper, the effect of an ultrafine-grained microstructure and subsequent aging treatment on the mechanical and wear behavior of a Cu-Cr-Zr alloy was investigated.

TL;DR: In this article, the effects of the addition of Y2O3 on the microstructure, microhardness, fracture toughness, and dry sliding wear resistance of the TiB/TiC-reinforced titanium matrix composite coatings were investigated.

TL;DR: In this article, an experimental test to analyze friction phenomena within the tool-chip interface in metal cutting is presented, which is derived from an orthogonal cutting process, modified to a high speed forming and friction process by using an extremely negative rake angle.

TL;DR: In this paper, the abrasive wear performance of 15 commercially available 400 HB grade quenched wear resistant steels from all over the world were tested with granite gravel in high stress conditions.

TL;DR: In this paper, the wear mechanism of alumina-based ceramic cutting tools during dry turning of Inconel 718 was experimentally investigated, based on the observation of tool wear, an attempt by employing the hardened layer beneath the workpiece surface is made to explain the occurrence of notch wear.

TL;DR: In this article, a tool wear characterization was carried out by weight loss measurement, pin profile photographic technique and microscopic observations using three types of tools made of W-1.1%La2O3 and two different grades of WC-Co based materials.

TL;DR: In this article, the wear and friction in the pitch region of the center of the poly-ether-etherketone (PEEK) gear teeth are investigated using a twin-disc configuration.

TL;DR: In this article, a combined numerical and experimental study was performed to understand how the evolution of material surface induced by erosion can inversely affect the multiphase flow characteristics and erosion mechanisms on the surface.

TL;DR: In this paper, the wear surface morphology and mechanisms were studied using scanning electron microscopy (SEM), XRD, and stereoscopy, and the microstructure of the composites was also characterized using SEM and optical microscopy.

TL;DR: In this article, the authors used finite element analysis (FEA) to find whether or not there exists a stress singularity at cylinder on flat contact according to different variables, such as applied displacement, coefficient of friction (COF), and fretting wear cycles.

TL;DR: In this paper, a modified asperity contact model was proposed for fractal rough surfaces and the critical area of a single as perity was scale dependent and the plastic to elastic mode transition agreed with classical contact mechanics.

TL;DR: In this article, a Ni-based superalloy pin against a cast iron disc was tested at 600 and 800°C (load: 20 N, frequency: 20 Hz, stroke: 1 mm).

TL;DR: In this paper, a particle extraction procedure is developed by making use of advances in morphological segmentations, and an iterative morphological scaling operation, incorporating gray and boundary based segmentation, is included to increase segmentation accuracy.

TL;DR: In this paper, the WS2/Zr coated Al2O3/TiC cutting tools with and without nano-textures significantly improved the lubricity at the tool-chip interface; the cutting force, cutting temperature, friction coefficient and tool wear are reduced compared with the conventional tools.

TL;DR: In this article, a twin disc testing technique was used to identify the wear processes taking place under dry, water and grease lubricated conditions for the first time, which can be used to improve predictions from MBD simulations.

TL;DR: In this article, the authors investigate vertical dynamic wheel/rail interaction resulting from a polygonal wheel at high-speeds, a vertical vehicle-track coupled dynamics model is adopted.

TL;DR: In this article, a study of diffusion wear mechanism in 1.2344 X40CrMoV5-1 steel FSW tool has been carried out from the standpoint of tribological layer generation and interaction with the tool's metal.

TL;DR: In this paper, a new erosion test rig, with a capability of producing a velocity greater than Mach 3, was built up to cater to this purpose, and results obtained from stainless steel testing showed that erosion rate was saturated at 120 s and reduced subsequently.

TL;DR: In this article, the microstructure and wear behavior of (TiB+TiC) particulate-reinforced titanium matrix composites (TMCs) fabricated by in situ synthesis were examined.

TL;DR: In this paper, it was found that the variation of wear width can be represented by a unique function of the ratio of load/hardness in consistency with the Reye's hypothesis and the Holm and Archard relationships.

TL;DR: In this article, a powder metallurgy method was used to extract 316L stainless steel composites with different solid lubricants, including Hexagonal boron nitride (h-BN), molybdenum disulfide (MoS 2 ), and a mixture of h-BN/MoS2 embedded in 316L steels.

TL;DR: In this article, the abrasive wear of carbide-free bainitic steel under dry rolling/sliding conditions has been studied and it is demonstrated that this nanostructure, generated by isothermal transformation at 200 °C, has a resistance to wear that supersedes that of other carbide free bainite steels transformed at higher temperatures.