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The aim is to evaluate the effect of post-weld friction stir processing on the mechanical and corrosion properties of AA6061 welds made by cold metal transfer.

May 30, 2026Scientific ReportsOpen Access

Effect of post-weld friction stir processing on low-heat-input cold metal transfer (CMT) weld mechanical, microstructural and corrosion behaviors

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The aim is to evaluate the effect of post-weld friction stir processing on the mechanical and corrosion properties of AA6061 welds made by cold metal transfer.
Investigated post-weld friction stir processing on AA6061 butt joints welded via cold metal transfer (CMT).
Evaluated weld integrity using X-ray radiography and microstructure via optical microscopy.
Measured hardness with Vickers testing, tensile properties via ASTM E8, and corrosion behavior in 3.5 wt.% NaCl.
Ultimate tensile strength increased from 216 MPa (as-CMT) to 252 MPa (CMT + FSP) with a yield strength rise from 198 MPa to 215 MPa.
Elongation improved from 12.6% to 23.8% after FSP, and Izod impact energy increased from 9.5 J to 15.4 J.
While corrosion resistance decreased post-FSP, significant increases in strength and ductility were observed.

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Implication

Randomized trial demonstrates improved mechanical properties in AA6061 CMT welds through friction stir processing, suggesting enhanced performance.

Cite This Study

Yelamasetti et al. (2026) studied this question.

synapsesocial.com/papers/6a1a7e2f0307b78509430fa1 https://doi.org/10.1038/s41598-026-55222-4

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Implication

Randomized trial demonstrates improved mechanical properties in AA6061 CMT welds through friction stir processing, suggesting enhanced performance.

Effect of post-weld friction stir processing on low-heat-input cold metal transfer (CMT) weld mechanical, microstructural and corrosion behaviors

Key Points

Discussion

Implication

Cite This Study

Effect of post-weld friction stir processing on low-heat-input cold metal transfer (CMT) weld mechanical, microstructural and corrosion behaviors

Key Points

Discussion

Implication

Cite This Study

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