Experiment Investigation on ND-YAG Laser Welded Aerospace Graded Titanium Alloy

Abstract

Laser welding of aerospace-grade Ti6Al4V titanium alloy, focusing on optimizing welding parameters and analyzing the resulting microstructural and mechanical properties. The experiment examines the effects of varying laser power, pulse duration, and focus positions on weld quality, heat-affected zones, and mechanical strength. These parameters are systematically altered to understand their impact on the final weld characteristics. Characterization techniques such as scanning electron microscopy (SEM), tensile strength testing, and microhardness profiling are used to evaluate the microstructure, mechanical properties, and hardness distribution of the welds. These methods provide a comprehensive understanding of how the welding parameters influence the performance and integrity of the welded joints. The results demonstrate a correlation between laser parameters and weld integrity, revealing optimal settings for achieving minimal porosity and enhanced fatigue resistance. This research provides insights into the microstructure-property relationships in Nd laser-welded titanium alloys, contributing to improved weld quality in aerospace applications.