<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">The cobalt base laser cladding layers were investigated after two years of service in two laboratory diesel engines. The microstructures of the clads after service did not demonstrated serious degradation process. Chemical compositions of the used layers and changes in hardness were described. These sorts of layers are suitable for long time service with out substantial damages.</abstract>

Faculty of Mechanical Engineering, Department of Materials Science and Engineering, Gdańsk University of Technology, Gdansk, Poland

Department of Mechanical Engineering, Gdynia Maritime University, Gdynia, Poland

Microstructure and properties of the cobalt base clad layers after long time service

<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">The main reason for laser remelting of the components made of aluminium, copper and titanium alloys is to obtain high hardness and corrosion resistance at the surface for longer lifetime as result of the rapid solidification. The final microstructure, phase composition and properties of aluminium, copper and titanium alloys depend on the laser process parameters and obviously on the nature of the equilibrium system.The effect of laser surface remelting at cryogenic conditions on the microstructure and corrosion characteristics of the AlSi13Mg1CuNi, SUPERSTON and Ti-6Al-4V alloys are presented. The beneficial effects of laser treatment on the microstructure and corrosion behaviour of those alloys used for different products are observed.</abstract>

Faculty of Mechanical Engineering, Department of Materials Science and Engineering, Gdansk University of Technology, Gdansk, Poland

Ship Design and Research Centre, Gdansk, Poland

Influence of laser remelting at cryogenic conditions on corrosion resistance of non-ferrous alloys

<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">Macroscopic and microscopic examinations of implant joints made under water have been performed. The investigations results indicate that in HAZ of the tested joints a formation of brittle structures has occurred. The brittle structures are responsible for an increase of susceptibility to cold cracking of high strength low alloy steel. An analysis of hardness penetration patterns of implant joints also indicates an adverse effect of water environment on weldability of steel.</abstract>

Underwater welded joint properties investigation

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Advances in Materials Science

Volume 9 (2009): Issue 4 (December 2009)

Microstructure and properties of the cobalt base clad layers after long time service

Influence of laser remelting at cryogenic conditions on corrosion resistance of non-ferrous alloys

Underwater welded joint properties investigation

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