In the paper, the effect of welding technology on the microstructure and mechanical properties of girth welded joints was presented. Metallographic examinations based on light microscopy and SEM were conducted on girth welded joints of API X70 steel pipe. Research has shown that microstructure of the heat-affected zone (HAZ) of MMA girth welded joints is not homogeneous and depends on the
Assessment and statistical correlation of mechanical Apr 01, 2020 · Additionally, we are currently in view of a non-linear based approach using artificial neural networks (ANN) modeling to predict mechanical properties of tensile and impact toughness of welded line pipe API X70 steel based on hardness or chemical composition. This will be the subject of a future paper. 4. Conclusions
This study aims to assess mechanical properties of submerged arc welded, high-strength, line pipe steel API X70. The obtained weldment as well as the base metal were assessed for strength, ductility, hardness, toughness and weldability. Results showed that the fusion zone presented the highest hardness and the lowest impact strength due to the
IMPROVING MECHANICAL PROPERTIES OF API X60/X70 The aim of this study is to improving microstructure and mechanical properties of the weldable gas pipeline steel using laboratory mill. To achieve the required microstructure and mechanical properties of thermo mechanically processed HSLA steels, it is necessary to have an idea about the role of composition and process parameters. The large numbers of parameters obtained during the
IMPROVING MECHANICAL PROPERTIES OF API X60/X70 WELDED The aim of this study is to improving microstructure and mechanical properties of the weldable gas pipeline steel using laboratory mill. To achieve the required microstructure and mechanical properties of thermo mechanically processed HSLA steels, it is necessary to have an idea about the role of composition and process parameters. The large numbers of parameters obtained during the
welded joints of steel pipe API 5L grade X70 (L485M) with a diameter of 914.4×17.1 mm. In the presented work the effect of welding process on mechanical properties and microstructure of weld metal was examined. The results of mechanical tests as well as residual stress measurements were also presented. 2.
MECHANICAL-TECHNOLOGICAL AND FRACTURE A prediction of the properties would save a lot of costs especially in the planning stage of new projects, like the one of Nabuc This paper gives an overview of the chemical com-positions, the mechanical properties, and the fracture mechanical values of the pipeline-steel X80 according to different standards (EN and API), by using different
Mechanical Properties Evaluation Method on Welded In order to solve the problem that the mechanical properties of containers and pipelines are difficult to evaluate during service, this paper focuses on the quantitative eion of hardness and mechanical properties. Taking the X70 pipeline steel as the research object, with 12 welds of the tensile test and 192 times the hardness of indentation test, the establishment of a mathematical
The mechanical properties of steel pipe have great effects on the integrality and operation safety of gas transmission pipeline. In order to reduce the cost of the steel pipe, the high-Nb X80 pipeline steels with the different alloying systems have been used in the Second West-to-East Gas Transmission Pipeline Project. Nevertheless, an investigation into the effects of chemical composition on
Mechanical properties of pipeline steel welds Materials In this study, the mechanical properties of welded microalloyed X42, X52, X60, X65, and X70 steels, which are generally used in the oil and gas industry based on API standards, were examined by taking into consideration their microalloying elements and the carbon content. Then, these steels were joined by using submerged arc welding (SAW).
Mechanical-Technological and Fracture Mechanical Nowadays already a lot of large onshore-projects have been implemented for the steel X80 with, as it seems, fully satisfactory results. A lot of money is spent worldwide in finding the right joining process for the circumferential welds of these pipes and so a worldwide central collection of welding variables and efficient processing could result in a prediction of the mechanical properties
Prediction of Cooling Rate in API-5L-X70 Steel Plates welded by Submerged Double-Arc Welding 1ELENA SCUTELNICU, 1CARMEN CATALINA RUSU, 2EMIL CONSTANTIN, 1VIRGIL TEODOR 1Department of Manufacturing Engineering Dunarea de Jos University of
Prediction of Mechanical Properties of Hot Rolled, Low (2005). Prediction of Mechanical Properties of Hot Rolled, Low-Carbon Steel Strips Using Artificial Neural Network. Materials and Manufacturing Processes:Vol. 20, No. 5, pp. 793-812.
Prediction of the Mechanical Properties and Fracture Prediction of the Mechanical Properties and Fracture Mechanical Values of Welded Joints Out of the Pipeline-Steels X70 and X80 and the Duplex-Steel 1.4462 for Flow Lines May 2013 Welding in the
Topics:Creep , Mechanical properties , Steel . Rapid Prediction of High-Temperature Properties of Furnace Tube Alloys Using Deep Learning Approaches. Shulin Xiang, Characterization of Anisotropic Mechanical Properties of X70 Spiral Welded Steel Pipes. Dong-Yeob Park, Jie Liang,
WELDING OF THE HIGH GRADE PIPELINE-STEEL X80 could result in a prediction of the mechanical properties and fracture mechanical values out of the data of the used for welding the pipeline-steel X80 according to different standards (EN and API), The steel StE 480.7 (corresponding to grade X70) was Prediction of the Mechanical Properties and Fracture Download Citation Prediction of the Mechanical Properties and Fracture Mechanical Values of Welded Joints Out of Pipeline-Steels (X70 and X80) Nowadays the pipeline-steels X70 and X80 are