Joining of Dissimilar Materials using:Yag Laser Welding

Barik, A K (2010) Joining of Dissimilar Materials using:Yag Laser Welding. BTech thesis.

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Abstract

The combination of mild steel and stainless steel as a welded joint has very important applications in industry. In this project, laser welding of mild steel to stainless steel was studied at different values of beam energy and welding speed, keeping beam diameter constant. A 9 kW ALPHALASER AL200 Nd:YAG laser was used to weld 1.5 mm thick mild steel and stainless steel plates. The photographs of the welded seams were observed and tensile testing of specimens was done to evaluate the mechanical properties of the welded joint. The peak load at which each specimen broke was found out. Results indicated that with an increase in values of both welding speed as well as beam energy, the peak load first increased gradually, attained a maximum, and then decreased. Equations were found out to depict the relation between (i) peak load and beam energy and (ii) peak load and welding speed.

Item Type:	Thesis (BTech)
Uncontrolled Keywords:	laser, welding, Nd:YAG, dissimilar
Subjects:	Engineering and Technology > Mechanical Engineering > Production Engineering
Divisions:	Engineering and Technology > Department of Mechanical Engineering
ID Code:	1799
Deposited By:	Amit Kumar Barik
Deposited On:	14 May 2010 16:51
Last Modified:	14 May 2010 16:51
Related URLs:	Dspace
Supervisor(s):	Sahoo, S K