Laser cladding technology is used to clad the surface layer of H13 mold steel with Ni60A metal powder coating solve failure problem. The study JMatPro software extract and fit thermophysical property parameters substrate material, then ANSYS APDL qualitatively analyze distribution melt pool morphology, nodal temperature versus time course curve residual stress magnitude during laser process. Ba...

Contact between the outer surface of a fuel pellet and the inner surface of the fuel rod cladding can result in several kinds of undesirable behavior. As the pellet swells outward and the cladding creeps down, large stresses are generated in both the pellet and the cladding. This contact may exacerbate chemical degradation of the cladding and the stress may enable rapid propagation of cracks. B...

Midinfrared lasers with an asymmetrical InPAsSb/InAsSb/AlAsSb double heterostructure are reported. Using the asymmetrical double heterostructure, pand n-cladding layers are separately optimized; high energy-gap AlAsSb (Eg'1.5 eV! for the p-type cladding layer to reduce the leakage current, and thus to increase To , and low energy-gap InPAsSb (Eg'0.5 eV! for the n-cladding layer to have low turn...

Corrosion of offshore oil and gas pipelines is an important problem that can generate catastrophic failures if not adequately managed. The issues are more important and critical for deepwater pipelines due to complexity of the designs and also due to difficulty in inspection, monitoring, and repair. Pipelines exposed to these severely corrosive environments require the use of corrosion resistan...

A comprehensive experimental study on the high-velocity oxygen-fuel (HVOF) sprayed tungsten carbide/cobalt (WC/Co) deposits using laser cladding was conducted. response surface methodology based a central composite design used to analyze, predict and optimize WC/Co of laser-based HVOF coatings. The morphologies microstructures clads were characterized optical microscope, scanning electron micro...

In this study, AlFeCrMoNi1.8Nb1.5 (at.%) eutectic high-entropy alloy (EHEA) coating was successfully prepared on the surface of M2 high-speed steel (HSS) by wide-laser cladding. The effects laser defocusing amount, power, scanning speed, and preset powder thickness formation quality EHEA were studied orthogonal experimental design, then mechanical properties water-cooled solidification under op...

Recent success in the design of broadened waveguide lasers [l] has made possible the operation of mid-infrared GaSb-based lasers above room temperature due to a reduction of internal loss. Measurements of temperature dependencies of heterobamer leakage and modal gain are essential for a better understanding of the role of different phenomena determining the device temperature performance. To me...

This review examines the methods used to optimize process parameters of laser cladding, including traditional optimization algorithms such as single-factor, regression analysis, response surface, and Taguchi, well intelligent system neural network models, genetic algorithms, support vector machines, new non-dominance ranking algorithm II, particle swarm algorithms. The advantages disadvantages ...