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To examine how a nickel interlayer influences the microstructure and properties of TIG-welded AA2219 aluminum.

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

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To examine how a nickel interlayer influences the microstructure and properties of TIG-welded AA2219 aluminum.
Utilized a nickel interlayer to enhance joint integrity in welding trials.
Conducted Vicker’s microhardness measurements and thermo-static creep testing at 300°C.
Implemented single-pass and double-pass welding conditions for comparative analysis.
The nickel interlayer led to the formation of intermetallic compounds enhancing weld quality.
Microhardness increased by 25.18%, with welds achieving 94 HV compared to 70 HV in the base material.
Double-pass welds showed significantly improved creep performance, sustaining 70 MPa with 2.71 mm elongation.

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Experimental trials improved mechanical performance and microstructure in welded AA2219 aluminum, indicating benefits for aerospace applications.

Dhanyanth Palanisamy Vanjimuthu (2025) studied this question.

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Experimental trials improved mechanical performance and microstructure in welded AA2219 aluminum, indicating benefits for aerospace applications.