Optimizing the CO2 laser welding process for dissimilar materials

A dissimilar full-depth laser-butt welding of low carbon steel and austenitic steel AISI316 was investigated using CW 1.5kW CO2 laser. The effect of laser power, welding speed and focal point position on mechanical properties (i.e., ultimate tensile strength, UTS and impact strength, IS) and on the...

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Bibliographic Details
Published in:Optics and lasers in engineering 2013-07, Vol.51 (7), p.832-839
Main Authors: Olabi, A.G., Alsinani, F.O., Alabdulkarim, A.A., Ruggiero, A., Tricarico, L., Benyounis, K.Y.
Format: Article
Language:English
Subjects:
Austenitic stainless steels
Dissimilar materials
Laser beam welding
Laser welding
Mathematical analysis
Mathematical models
Mechanical properties
Operating costs
Optimization
Polynomials
Welding
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Summary:A dissimilar full-depth laser-butt welding of low carbon steel and austenitic steel AISI316 was investigated using CW 1.5kW CO2 laser. The effect of laser power, welding speed and focal point position on mechanical properties (i.e., ultimate tensile strength, UTS and impact strength, IS) and on the operating cost C was investigated using response surface methodology (RSM). The experimental plan was based on Box–Behnken design; linear and quadratic polynomial equations for predicting the mechanical properties were developed. The results indicate that the proposed models predict the responses adequately within the limits of welding parameters being used. The optimum welding conditions were found. ► A dissimilar full-depth laser-butt welding has investigated. ► Process parameters has been investigated. ► Linear and quadratic polynomial equations for predicting the mechanical properties were developed. ► The optimal operating conditions have been defined.
ISSN:0143-8166
1873-0302
DOI:10.1016/j.optlaseng.2013.01.024