Improvement in Mechanical Properties of FB-TIG Welded AA6061 Using Laser Shock Peening

DOI

10.2991/978-94-6463-922-3_32How to use a DOI?

Keywords

Flux-Bonded TIG Welding; Laser Shock Peening; AA6061

Abstract

Tungsten Inert Gas (TIG) welding is widely used in various industries due to its ability to produce high-quality welds. However, a common issue with TIG welding is the lack of sufficient penetration depth, which can compromise the structural integrity and performance of the welded joints. To overcome this issue, advanced welding methods such as ATIG and FBTIG welding have been developed. These techniques improve weld penetration and overall weld quality. However, they also tend to alter the material properties, particularly tensile strength and hardness, which may affect the performance of the welded structures. The objective of this research is to assess the effectiveness of LSP in enhancing the mechanical properties of FBTIG welded joints. The methodology involves subjecting TIG welded specimens to LSP and conducting comprehensive mechanical testing to evaluate changes in tensile strength and hardness. These results are then compared to those of specimens treated with conventional FBTIG welding techniques. Preliminary findings indicate that LSP significantly improves the tensile strength and surface hardness of FBTIG welded specimens. The induced compressive residual stresses from LSP enhance the material’s resistance to mechanical stresses and extend the fatigue life of the welds. These improvements show that LSP can effectively overcome the limited penetration depth of traditional TIG welding, enhancing the performance and durability of welded joints. This study highlights LSP as a useful post-weld treatment for improving the mechanical properties of TIG-welded structures and offers insights for optimizing welding and post-weld practices to achieve better weld quality and reliability in industrial applications.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Roshin Thomas Varughese
AU  - P. M. Ajith
AU  - V. M. Joy Varghese
PY  - 2025
DA  - 2025/12/25
TI  - Improvement in Mechanical Properties of FB-TIG Welded AA6061 Using Laser Shock Peening
BT  - Proceedings of the International Conference Recent Advances in Materials, Processes and Technology for Sustainability (RAMPTS 2025)
PB  - Atlantis Press
SP  - 482
EP  - 489
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-922-3_32
DO  - 10.2991/978-94-6463-922-3_32
ID  - Varughese2025
ER  -