Melted Zone Characteristics of Laser Welded Titanium Alloy (Ti-6Al-4V) under Different Process Parameters

Abstract:

Being widely used in aircrafts structure and aircraft turbine parts, chemical processing equipment and marine hardware, titanium alloys are well known of their high strength and corrosion resistant even though this material is categorized as hard to machine material and reactive to hydrogen and oxygen in elevated temperature. And joining titanium alloys in fabricating parts used in aerospace and medical application requires excellent temperature distribution control to minimize the heat effect. Due to this, laser welding is one of the best methods for the selective area heat induction capability and high accuracy. However, proper processing parameter need to be determined based on the characteristics of the laser source and processed material. Hence, this study is carried out to clarify the performance of a medium range powered laser by comparing and analyzing the welding beads characteristics changes occurred under different processing parameters. Welding beads were analyzed visually from two directions to obtain overall view of molten zones.

• Periodical: Applied Mechanics and Materials (Volume 315)
• Pages: 304-308
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.315.304
• Online since: April 2013
• Authors: Nur Jannah Md Ngajib, Magdelyne A.A. Liman, Zazuli Mohid, Md Saidin Wahab
• Keywords: Heat Affected Zone (HAZ), Laser Welding, Penetration Depth, Pulsed Laser, Titanium Alloy

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