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Keywords: microstructure
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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, V001T08A006, September 26–30, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IPC2022-87069
... of the environment, which consists of % RA, fracture toughness, fatigue, etc. is driven primarily by metallurgical components of the through-thickness microstructure such as average high angle grain boundary (HAGB) size and homogeneity of the HAGB’s . A relationship can perhaps be developed of ductility attributes...
Proceedings Papers

Proc. ASME. IPC2020, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A016, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9401
... Abstract The effect of different cooling processes on microstructure especially precipitation behavior and properties of high grade pipeline steel was investigated in this paper. The results showed that: By two stage controlled cooling process, ferrite-bainite phase was obtained in X80 pipeline...
Proceedings Papers

Proc. ASME. IPC2020, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A011, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9741
... of the bends was welded by Ni-Cr-Cu-Mo-Nb-V micro-alloyed Thermo Mechanical Control Process (TMCP) steel plates. After the heat cycle of the bent pipe manufacturing, the microstructure of the base material of the bent pipe consisted of lath bainite ferrite (LBF) and granular bainite (GB). Therefore, it can...
Proceedings Papers

Proc. ASME. IPC2020, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A021, September 28–30, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IPC2020-9589
..., composition, microstructure, and hardness. Economic and market demands have driven changes in steelmaking technologies and pipe-forming approaches. Knowledge of the relationships between processing, microstructure and mechanical properties have been fundamental to the evolution of steel line pipe...
Proceedings Papers

Proc. ASME. IPC2012, Volume 3: Materials and Joining, 105-111, September 24–28, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IPC2012-90118
... the steel composition and processing parameters to give an optimum microstructure with a low grain size and homogeneous distribution of phases. During double submerged arc welding (DSAW) in the production of large- diameter linepipes, the heat-affected zone (HAZ) undergoes severe changes...
Proceedings Papers

Proc. ASME. IPC2008, 2008 7th International Pipeline Conference, Volume 3, 445-451, September 29–October 3, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IPC2008-64643
... 10 07 2009 The mechanical properties of microalloyed steels used in pipelines are strongly affected by microstructure. In this paper, X-ray diffraction (Rietveld method) was used to quantify the microstructure — specifically domain size, microstrain and preferred orientation — for four...
Proceedings Papers

Proc. ASME. IPC2002, 4th International Pipeline Conference, Parts A and B, 2119-2125, September 29–October 3, 2002
Publisher: American Society of Mechanical Engineers
Paper No: IPC2002-27298
... than in the other steels as it seemed less affected by the loading condition than by charging time. Hydrogen content loading pipeline steel microstructure Proceedings of IPC 02 4th International Pipeline Conference September 29 October 3, 2002, Calgary, Canada DR wana l and ty of T6G each...