The oil and gas production has grown steadily, the care with its transportation grid needs to be maintained expanded. pipeline used in transport of by-product requires materials high mechanical strength, toughness, fatigue resistance. chemical composition distribution, amount, morphology final microconstituents steel are paramount importance once it will directly influence properties. fracture ...

Gas–liquid intermittent flow is a kind of pattern that distinguishes itself from the conventional by apparent non-steady feature, which causes serious corrosion issues, including localized corrosion. Although it widely exists in wet gas pipelines, how gas–liquid influences CO2 pipeline steels remains problem to be clarified. In this work, testing device enables good simulation pipelines under v...

Friction stir welding (FSW) is an excellent alternative process used in pipelines circumferential welds due to fusion welded joint low corrosion resistance. This study describes the resistance as a function of microstructural features resulting from API X70 FSW joint. The were examined by optical microscopy, scanning electron and x-ray diffraction. analysis was conducted employing potentiodynam...

In this paper, the initial and maximum load was studied using Finite Element Modeling (FEM) analysis during impact testing (CVN) of pipeline X70 steel. The Gurson-Tvergaard-Needleman (GTN) constitutive model has been used to simulate growth voids deformation steel at different temperatures. FEM simulations results study sensitivity with GTN parameters values proposed variation Finally, applied ...