Effects of Thermo-Mechanical Control Process on the Microstructure and Properties of the Welded Joints of ERW OCTG

Zong Yue Bi; Jun Wang; Xiao Tian Jing

doi:10.4028/www.scientific.net/AMR.189-193.3564

Paper Titles

Optimal Design for Fe-Cr-C Hardfacing Alloys with Anti-Wearing
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Prediction and Control of Welding Distortion in "U" Rib Orthotropic Plate
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An Experimental Investigation on Railway Adhesion Properties under Water Medium and Dry Condition Respectively
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Nonuniformity of Mechanical Property in the Weld Zone of Friction Stir Welded 7050 Aluminum Alloy Joint
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Effects of Thermo-Mechanical Control Process on the Microstructure and Properties of the Welded Joints of ERW OCTG
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Effect of Linear Cutting on Corrosion Behaviors in 304 Stainless Steel
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Research and Numerical Simulation of Contactor of High-Frequency Welding Device
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Study of the Effect of Active Fluxes in Gas Tungsten Arc Welding
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Experimental Study on the Effects of Rotational Speed and Attack Angle on High Density Polyethylene (HDPE) Friction Stir Welded Butt Joints
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 189-193Effects of Thermo-Mechanical Control Process on...

Effects of Thermo-Mechanical Control Process on the Microstructure and Properties of the Welded Joints of ERW OCTG

Abstract:

In the paper, the effects of thermo-mechanical control process on microstructure and properties of oil country tubular goods by electrical resistance welding are analyzed. The TMCP parameters are optimized by Gleeble-1500 thermo-mechanical simulator, and industrial trial is carried out. The microstructures in the welded joints of original ERW OCTG are mainly composed of proeutectoid ferrite, pearlite and widmanstatten. In contrast, the welded joints of ERW OCTG treated by TMCP consist only of refined ferrite and pearlite. The higher low-temperature impact toughness and the better resistance to the grooving corrosion of the welded joints of ERW OCTG treated by TMCP could be attributed to removing welding residual stresses, homogenizing microstructure, eliminating porosity and refining grain. TMCP facilitates the performance optimization of welded joints so that the quality of the finished product can be improved.