The high alloying degree of Duplex stainless steels makes them susceptible to the formation of intermetallic phases during their exposure to high temperatures. Precipitation of these phases can lead to a decreasing of the corrosion resistance and sometimes of the toughness. Starting from the advantages of the synergic Metal Active Gas (MAG) pulsed welding process, this paper analyses the struct...

Steel structures continuously exposed to offshore marine environments are prone to corrosion. This can be of major economic and perhaps of environmental significance. The risk of these scenarios occurring can be assessed using good quality data, good quality corrosion and pitting models and structural reliability assessment. Recently, improved models for the prediction of longer term corrosion ...

Rowena Harris’ recent work presents carefully composed constellations of materials and almost-repeated images. These constellations inhabit both physical, tangible space (in the form of sculptural elements and digital prints) and digital realms in the form of a video reel and an e-book. Welded steel lines extend from the gallery floor and walls, providing a formal and physical support structure...

One source of structural vibration in a submarine is the fluctuating axial thrust force applied to the thrust block by the propeller shaft. This paper describes the initial stages of experimental work being undertaken to validate an existing mathematical model for the sound radiation from a submarine excited by this mechanism. A thin cylindrical shell 1500mm long and 400mm in diameter made of 2...

S. Bulatović, Yugoslav River Shipping, Serbia, Lj. Milović, University of Belgrade, Faculty of Technology and Metallurgy, Serbia, A. Sedmak, University of Belgrade, Faculty of Mechanical Engineering, Serbia, I. Samardžić, University of Osijek, Mechanical Engineering Faculty, Slavonski Brod, Croatia Low cycle fatigue test was performed in ambient atmosphere at room temperature. Cycle loading of ...

The paper demonstrates the correlation between the chemical composition of steel grades and the hardness as well as the formability of laser welds generated with modern automotive high strength steel grades. At the very low heat input of industrial laser welding and the resulting extremely high cooling rate, the weld hardness is fully controlled by the carbon content of the base materials and n...

Original scientific paper The microstructural transformations which took place during the welding of duplex steel as well as their influence on the resistance to particle erosion wear and cavitation erosion wear were investigated. A sample was cut from a 1.4462 rolled steel plate and heat treated in order to obtain a microstructure which would resemble, as closely as possible, the actual welded...

Fe-2.25Cr-1Mo a widely used material for headers and steam tubes of boilers. Welding of steam tube to header is required for production of boiler. Heat affected zone of the weld can have poor mechanical properties and poor corrosion behavior leading to weld failure. The cost of material used for steam tube and header of boiler should be controlled. This study propose a new materials design for ...

Electrical-current-assisted friction stir welding (EA-FSW) is a procedure developed for the joining of similar and dissimilar materials. EA-FSW newly invented solid-state process to increase welded components’ efficacy in various applications, such as marine structures. joints have investigated on aluminum–magnesium, aluminum–steel, polymer-to-steel. Similar been performed aluminum, magnesium, ...