Transient thermal analysis of laser beam welding of titanium alloy sheet

Melting and evaporation occur when the laser beam falls on the surface of the material. A pool of molten metal forms at the interface of two materials in the laser welding process. In general there are two methods for the laser welding process. This work discusses the transient thermal analysis of laser beam welding of titanium alloy thin sheets. The main point of discussion is the effect of heat on the temperature field over different time frames. Compared to other lasers, Nd-YAG laser is gaining increasing focus among lasers because of its exceptional feature. Conduction mode and keyhole mode are the two modes of lase welding process. Out of that keyhole mode is used for thick material with high power density and conduction mode is used for low thickness with low power density. In this report laser beam having fibre diameter 0.6 mm is taken as a constant flux moving heat source which was focused on two Titanium alloy (Ti-6Al-4V) plates of thickness 1 mm placed in contact with each other. Temperature distribution at different interval of time and 'heat affected zone' (HAZ) were determined using ANSYS. Copyright (C) 2022 Elsevier Ltd. All rights reserved.

Automated summary

This article discusses the transient thermal analysis of laser beam welding of titanium alloy thin sheets. The study shows that the effect of heat on the temperature field varies over different time frames. Additionally, the research finds that Nd-YAG laser is gaining increasing focus in laser welding due to its exceptional feature.