Mechanical and Microstructural analysis of Dissimilar material joining
by Laser welding
This paper proposed the comparative study on Incoloy 825 Ni-based alloy
and AISI 316L austenitic stainless steel dissimilar joints. Welding is
accomplished by Nd: YAG pulsed laser beam welding process. This paper is
about to investigate the process parameters like laser focal diameter,
Power, and pulse frequency in LBW welding of above dissimilar plates.
Characterization was conducted by optical microscopy, electron
microscopy to understand the microstructural changes during welding.
Micro-hardness and tensile tests are carried out to study the evolution
of mechanical properties of solder joints. Based on the research work,
laser beam welding has certain advantages over other welding techniques
due to its less heat affected zone, high power intensity, high
repetition rate. Among various analytical and experimental optimization
methods, the Taguchi method is more efficient. So this experimentation
is about to prove the weld efficiency of dissimilar metal can meet the
requirements in oil and gas industries and other industries.