Project Abstract

Laser beam welding is a precise and highly efficient welding method that is demanded in industries such as aerospace, automotive, electronics, and medical for the joining of metallic materials. Metals are widely used because of their durability and strength. However, metallic components need to be modified or repaired due to wear and tear; hence, laser welding of metals is suitable due to its lower heat-input advantage over conventional welding processes.

Despite this, there are still several issues with the quality of the welded joint, such as (1) the inconsistency of mechanical and chemical properties of the welded joint, (2) hot cracking and dilution of welded material, and (3) uncontrolled heat-affected zone and defects.

Therefore, to solve these issues, research on laser welding of metals must be conducted at a fundamental level, such as (1) investigating the thermal interaction between laser and metal on the changes in microstructure and chemical composition, and (2) analysing the mechanical properties of the welded zone as a function of laser irradiation or other deposition conditions. This fundamental knowledge will help optimise the laser welding process for targeted applications.