Laser heat treatment (LHT) is applied herein after coating. Evaluation of the results was performed by studying microstructures via metallographic SEM/EDX microscopy, and mechanical properties were analyzed in terms microscopic hardness abrasion resistance. The objective this study to investigate effect LHT on wear resistance metal coatings. indicate influence microstructure chemical compositio...

this paper deals with the investigation of the microstructure and hardness of steel samples cladded with satellite 6-wc composites by using gas tungsten arc welding (gtaw) process. for this purpose, steel samples were coated with unreinforced and reinforced stellite (by 20, 30 and 40 wt.% wc). the cladded samples were evaluated by metallographic studies, microhardness measurement and x-ray diff...

non-destructive eddy current (ec) technique has long been used to detect discontinuities in materials. recently, its application has been extended to characterize materials microstructure. in order to identify different microstructures, four plain carbon steel bars with different chemical compositions (aisi 1015, 1035, 1045 and 1080) were used in annealed condition. the pearlite percentage, car...

The very high cycle properties of Inconel 718 in two different heat treatment conditions were investigated at a test temperature 500 °C. One condition was optimized for fatigue strength and displayed finer-grained microstructure, while the second batch had more coarse-grained microstructure. For high-temperature ultrasonic testing, new concept developed. method is based on principle hot-air fur...

A method for finding the microstructural parameters of low-carbon steel using its metallographic images is proposed. It allows to determine the following parameters: the ratio of perlite to ferrite phases, the parameters of grains of crystallites and their mutual arrangement; the degree of granularity of the pearlite phases. The method is aimed at predicting the strength characteristics of stee...

In this research the effect of volume and morphology of eutectic carbides on tribological behaviour of Ni-Hard 4 cast irons have been investigated. Therefore, as a result of the fact that the carbon content effects the carbides morphology of Ni-hard cast irons, the chemical compositions of five different specimens were kept constant with the exception of the carbon content, which was varied fro...

SURFACE REPLICATION is a welldeveloped electron microscopy sample preparation technique that can be used to conduct in situ measurements of the microstructure of components. The in situ determination of microstructural deterioration and damage of materials subjected to various environments is an objective of any nondestructive evaluation (NDE) of structural components. The need to assess the co...

The article is devoted to the analysis of wear resistance diffusion coatings, which were applied by ionic nitriding on steel 40ХН2МА. There a comparison technological efficiency results. parameters modes used in process application are presented, with list equipment and stages. authors conduct comparative chemical composition, microstructure, metallographic tribological studies. They study kine...

Abstract Inconel 625 superalloy samples were fabricated using wire arc additive manufacturing (WAAM). The phase composition, microstructure, anti-corrosion, and mechanical properties of the WAAM analyzed. microstructure alloy showed good forming quality, no defects, metallurgical bonding within specimens. metallographic structure exhibited primarily γ -Ni granular precipitated phases; average m...