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This research aims to assess the microstructural evaluation and tensile properties of GTAW weldments in stainless steel 304 seam pipes.

May 24, 2026MetalsOpen Access

Microstructural Evaluation and Tensile Properties for GTAW Weldments of Stainless Steel 304 Seam Pipes

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This research aims to assess the microstructural evaluation and tensile properties of GTAW weldments in stainless steel 304 seam pipes.
Examined microstructural characteristics using EBSD analysis (IQ, IPF, KAM mapping)
Utilized a three-segment current profile during GTAW with specified peak currents and shielding gas
Conducted cross-weld tensile tests per ASTM E8/E8M-22 standards.
Yield strengths above 200 MPa and ultimate tensile strengths of 650-680 MPa were achieved.
Total elongations approached 40%, comparable to the as-received pipe.
Fractography confirmed fully ductile failure, indicating no major defect-induced embrittlement.

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Randomized trial evaluates tensile and microstructural properties in stainless steel pipe weldments, indicating high-purity suitability.

Park et al. (2026) studied this question.

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