| The effect of process parameters on pulsed Nd:YAG laser welding of Inconel 625 |
| Paper ID : 2081-UFGNSM13-FULL (R1) |
| Authors: |
|
Hadi Ramezani1, Seyed Ali Asghar Akbari Mousavi *1, Hossain Ebrahimzadeh2 1School of Metallurgy and Materials Engineering, University College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran 2university of Tehran |
| Abstract: |
| The bead on plate welding specimens with the 1mm thickness was fabricated by Nd:YAG pulsed laser SW-1 . The effects of laser process parameters on the weld dimensions, metallurgical and mechanical properties of weld metal were investigated. The results showed that both weld depth and weld width increase with voltage. Unlike base metal that has coaxial grain structure, weld metal is composed of a dendritic structure. Grain growth in the heat affected zone did not occur. However, ultrafine precipitations were deposited at the HAZ which their size was approximately between 500 nm to microns. All tensile specimens failed in the fusion zone. |
| Keywords: |
| Laser beam welding, Inconel 625, Ultrafine grain precipitations, Process parameters. |
| Status : Paper Accepted (Poster Presentation) |
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