Investigating mechanical properties of laser welding of st37 steel sheet using nd:yag laser

Azizi, Hossein; Sadeghi, Ali

doi:10.61186/masm.3.1.111

Investigating mechanical properties of laser welding of st37 steel sheet using nd:yag laser

Document Type : Original Article

Authors

Hossein Azizi

Ali Sadeghi

Department of Mechanical Engineering, Damavand branch, Islamic Azad University, Damavand, Tehran, Iran

https://doi.org/10.61186/masm.3.1.111

Abstract

Considering possible plastic deformations for metals such as steel during design calculations reduces metal consumption in practice. In general, structural elements with heavy loads, such as shells of building structures, rockets, chemical reactors, thin-walled pipes and other structures, are designed using computational methods, in order to properly and scientifically design, plastic deformations should be considered in them. Laser welding is one of the most important and sensitive types of welding in metals, which has many applications in various industries. In the present study, the effects of laser processing on the mechanical strength of steel sheets and their resistance to bending loads caused by laser radiation have been investigated. The results of bending tests and computer simulation of elastoplastic deformation show that st37 carbon steel sheet subjected to local laser processing with surface melting due to increased mechanical strength can be used as a suitable replacement for more resistant and expensive alloys in advanced industrial and military applications.

Keywords

microstructure

Mechanical properties

laser welding

steel sheet st37

nd:yag laser

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