Abstract A36 and A53 steels are low carbon steel with relatively similar percentage, respectively 0,25-0,30% 0,25-0,29%. Both often used within the marine industry. The objective of this research is to figure out effect variation groove angle heat input process welding two different plates towards a metallography, tensile, bending test E71T electrode, as well figuring weld 18 mm thick plates. 5...

4340 steel powders were processed with an additive manufacturing process using the FFF (Fused Filament Fabrication) technique. A composite filament was developed to print samples and study effect of bed nozzle temperatures on its physical microstructural properties. The printed debinded sintered by: Solid State (SS) at 1300 °C or SLPS (Supersolidus Liquid Phase Sintering) 1420 °C. Metallography...

Abstract Regarding porosity formation and gas content, choosing the appropriate shielding for laser welding is essential achieving high-quality joints. Keyhole-induced tendency nitrogen content in SS 304 stainless steel welds were investigated based on gases during fiber welding. Beads-on-plate autogenous made at 5 kW continuous wave (CW) N 2 Ar mixtures. Optical metallography, micro-focused X-...

This paper presents the development of welding technology for P460NL2 steel with a thickness 30 mm. The was developed purpose producing housings in which device PIG-Pipeline Inspection/Intervention Gauge intended testing and maintenance pipelines is installed. In this particular case, were cleaning transport acid-aggressive gases. material selected accordance NACE MR0175/ISO 15156 ASME BPVC IKS...

Microstructural examination can provide a rich tapestry of information about the processing and application history of a metal component. For this reason, microstructural characterization is a fundamental tool for failure analysis of these components. To reduce costs and accommodate demands for smaller packaging, many applications currently use metallic components where the critical dimensions ...

The use of Fe-Al intermetallic compound coatings has been investigated in order to improve the tribological behaviour of carbon tool steel. The coatings were formed by a pack cementation process and subsequently diffusion annealing at 900˚C in an argon controlled atmosphere. The optimum diffusion time was selected on the basis of optimum thickness and tribological behaviour. The microstructure...