... separate heat treatment schedules are followed: solution treatment ( ST ) and STA (i.e. ST + AT [ageing treatment]) treatment. ST is performed at 840 °C, 2 h + oil quenching, while AT corresponds to 492 °C, 2 h + oil quenching. Microstructural alterations along with variation in the microhardness...

... distinct Co-Cr alloy variations are manufactured using SLM. The samples are subjected to identical post-processing heat treatments to evaluate changes in microstructure, microhardness and fatigue strength. The methodology incorporates microstructural analysis techniques, fatigue resistance testing...

... such as tensile properties (ultimate tensile strength and % elongation) and microhardness are carried out. The obtained mechanical properties are correlated with part porosity/relative density. The as built specimens are then post-heat treated (homogenization treatment followed by double-stage aging...

... interlayer micropowder alloying Multiphase steel Microhardness Low-temperature impact strength SEM and EDS Precipitation strengthening Additive manufacturing is one of the advanced manufacturing techniques in the era of Industry 4.0. It is capable of printing a large variety of materials...

... a distance of laser and wire of 6–8 mm, a laser wavelength of 1,064 nm and the highest weld fusion ratio. The microhardness test shows that the average hardness of single-beam laser forging in the weld zone is 487.54 HV, which is 10.30% higher than that of arc welding. The average hardness in the fusion zone...

.... However, the mechanical properties of the coating sometimes cannot meet the process requirements. Therefore, the purpose of this paper is to prepare coatings with high microhardness and flexural strength. Design/methodology/approach The YCF102 alloy powder was mixed with different contents of Co...

... densities are characterized. Findings Both high relative densities and microhardness can be obtained in the optimized processing window. The decrease of martensite width and spacing can improve the microhardness on both XOY and XOZ sections when the applied E_V (defined as the laser...