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TITLE : Laser Assisted Cladding – A Review  
AUTHORS : Adithya G      Anand Pandey            
DOI :  
ABSTRACT :

Laser Assisted Cladding (LAC) is one of the most extensively used thermal energy dependent non-contact type advance cladding technology having capability of obtaining a treated surface on wide range of surfaces on materials precisely and accurately. A Laser beam focused on to the clad material generates enormous amount of thermal energy, as electrons hit the surface with high kinetic energy resulting in conversion of this kinetic energy into heat energy. This leads to localized melting of clad material with parent material or substrate enabling a proper mixing of both. So precisely, a different layer of material is deposited over a different substrate material. Laser cladding technique is very important in industries so that a very superior metal coating can be obtained on an inferior metal, resulting in improved mechanical properties. This process can be obtained in two ways, depending upon timing of placement of powder in the zone. The driving force for the research on the laser cladding is the advantage that laser beam possess, i.e. its high accuracy and low HAZ area resulting in precise cladding process. Even after many years of the evolution of laser beam & laser cladding technology, still a lot of betterment & exercise is to be yet done by the researchers. Lot of researchers have tried to focus on the various process parameters, types of lasers thereby increasing the efficiency & applicability of different cladding materials on different materials. This paper deals with the review of the research explored on the laser cladding technology in recent years by various researchers.  

Keywords: Laser Assisted Cladding, HAZ, Clad Material, Laser beam

 
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