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This is a Experimental Study study.

October 10, 2025

Metallurgical Examination of Premature High-Temperature Fracture in Welded 304H Pipework

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High-temperature fractures were observed in 50mm-thick welded 304H pipework after two years of service.
The investigation revealed stress relaxation cracking as a significant failure mechanism in the welded joints.
Detailed metallurgical examinations focused on microstructural characterization and the effects of heat-treatments.
Understanding cracking mechanisms is crucial for improving design and operational parameters in the energy sector.

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Identification of stress relaxation cracking and its impact on stainless steel integrity in the energy sector.

Sotoudeh et al. (2025) studied this question.

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