Experimental investigation on aisi 316l material using laser beam welding parameters

The SS316L is widely used in under water, marine, oil and gas industries, boilers, evaporators, pressure vessels etc,. It have high corrosion resistance and offers suitable performance in the hot de-aerated seawater. These are used in oil and gas tansistion pipeline due to its high corrosion resistance to low temperature, embrittlemenet and corrosion resistance.The purpose of the study is to develop an optimal welding method for austenitic stainless steel by deducting and controlling the parameters of Nd:YAG pulsed laser beam for use at low temperatures. Characterizations were conducted by optical microscope, to understand the micro structural changes developed during welding. Micro hardness test and tensile tests are carried out at the welded joints to ensure its weldment strength and hardness. To find the best welding parameters by using Taguchi’s L9 Orthogonal Method. The test results show that ANOVA models are significant to prove the weld efficiency of ASI316L austenitic stainless steel to meet the requirements of oil and gas industries.