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Keywords: HAZ softening
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Proceedings Papers

Proc. ASME. IPC2022, Volume 1: Pipeline Safety Management Systems; Project Management, Design, Construction, and Environmental Issues; Strain-Based Design and Assessment; Risk and Reliability; Emerging Fuels and Greenhouse Gas Emissions, V001T06A003, September 26–30, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPC2022-87237
... of pipelines where strain could potentially accumulate in under-matched girth welds”. With respect to the SA, the failure causes were consistently linked to combinations of: i) high strength pipe with a minimum tensile strength exceeding actual weld strength values, ii) girth weld HAZ softening as a result...
Proceedings Papers

Proc. ASME. IPC2022, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A026, September 26–30, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPC2022-87290
... for pipeline girth welds, the FCAW-S exhibits higher upper shelf energies and lower mid-transition temperatures. The FCAW-S and cellulosic SMAW were also compared relative to HAZ softening and weld strength overmatching using the data from microhardness maps. HAZ results indicate the FCAW-S will produce...
Proceedings Papers

Proc. ASME. IPC2020, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A023, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9725
...: (1) weld strength undermatching, (2) heat-affected zone (HAZ) softening, and (3) elevated stresses/strains from normal settlement and other loads. Weld bevel geometries of manual welding processes that favor plastic straining along the softened HAZ and low strength root passes were also compounding...
Proceedings Papers

Proc. ASME. IPC2020, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A035, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9721
... Abstract Owing to recent concerns regarding pipeline field girth weld performance, particularly heat affected zone (HAZ) softening and toughness, EVRAZ North America has initiated a research program to evaluate the response of API grade line pipe to the current field girth welding practices...
Proceedings Papers

Proc. ASME. IPC2020, Volume 2: Pipeline Safety Management Systems; Project Management, Design, Construction, and Environmental Issues; Strain Based Design; Risk and Reliability; Northern, Offshore, and Production Pipelines, V002T06A007, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9663
... with evenmatching or overmatching welds, minimum heat affected zone (HAZ) softening, and a surface breaking flaw at the weld centerline or the fusion boundary. This paper examines the effects of pipe internal pressure on the TSC of girth welds under the premise of weld strength undermatching and HAZ softening...