Nickel interlayer-based approach for enhancing the creep and microstructural properties of TIG-welded AA2219 aluminum alloy joints

Hariesh Subramaniam Ponmurugan, Saran Raj Kanagaraj, Dhanyanth Palanisamy Vanjimuthu, Vaira Vignesh Ramalingam, Govindaraju Myilsamy, Saravanan Ramachandran, Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering

Published online on December 04, 2025

Abstract

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, Volume 240, Issue 6, Page 934-947, May 2026.
This study investigates the influence of a nickel interlayer on the microstructure, mechanical properties, and creep performance of Tungsten Inert Gas (TIG)-welded AA2219 aluminum alloy, widely used in aerospace structures. A novel welding approach was ...