The Impact of the Laser Welding Speed on the Mechanical Properties of Joints in Multilayer Pipes

Stanisław Mroziński; Michał Piotrowski

doi:10.4028/www.scientific.net/MSF.726.133

Paper Titles

Fatigue Life Tests of Explosively Cladded Steel-Titanium Bimetal
p.106

Simulation of Tensile Test of the 1/2Y Welded Joint Made of Ultra High Strength Steel
p.110

Identification of Efficient Material S-N Curve for Steel Welded Joints
p.118

Residual Stresses in Steel-Titanium Composite Manufactured by Explosive Welding
p.125

The Impact of the Laser Welding Speed on the Mechanical Properties of Joints in Multilayer Pipes
p.133

Model of the Deformation Process under Thermo-Mechanical Fatigue Conditions
p.143

Influence of Temperature on the Cyclic Properties of Martensitic Cast Steel
p.150

Use of Thermography for the Analysis of Strength Properties of Mini-Specimens
p.156

Variations of the Specimen Temperature Depending on the Pattern of the Multiaxial Load – Preliminary Research
p.162

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The Impact of the Laser Welding Speed on the Mechanical Properties of Joints in Multilayer Pipes

Abstract:

The paper assessed the impact of the laser welding speed on the strength and fatigue properties of the aluminum layer found in multilayer pipes. The conducted experiment has shown that during the adjustment of the welding speed one has to take into account not only the results of static tests, but also the results of fatigue tests. The impact of the welding speed on fatigue life depends on the level of stress max. This level is slight in the area of the biggest stresses and increases along with the decrease in stresses.