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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Pan American Materials Congress: Materials for Oil and Gas Industry
Presentation Title High Temperature In-Situ X-ray Analysis of a Lean Duplex Stainless Steel
Author(s) Adriana C Rocha, Andrea Pedroza, Gabriela Pereira
On-Site Speaker (Planned) Adriana C Rocha
Abstract Scope Duplex Steels have been used for different applications in the oil and gas industry due to their high strength and corrosion resistance characteristics. In this work, a Lean Duplex Steel (UNS S32304) has been investigated by In-Situ X-Ray Diffraction, in order to address the phase transformations occurring during high-temperature real time exposure and the formation of deleterious phases such as sigma phase. Samples were subjected to a temperature of 800C for different intervals of time (30min, 60min and 90 min) inside a high temperature furnace attached to an x-ray diffractometer. Formation of sigma phase was observed, both in the ferrite grain boundaries and in the ferrite/austenite interface. The volume of sigma phase was measured by quantitative phase analysis using the Rietveld method and results varied from 11% to 17 %vol. Significant increase on sigma volume was observed and different kinetics mechanisms were investigated for the 30 and 60 minute intervals.
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Design and Thermo-mechanical Processing of Steel Grade APIX70 PSL2 for Use in Line-pipe at Oil&Gas Industry
Dynamic Transformation and Retransformation during the Simulated Plate Rolling of an X70 Pipeline Steel
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Evaluation of Non-Destructive Techniques (Thermography, Ultrasound and Eddy Current) for Detection of Failures in Metallic Substrates with Composite Anticorrosive Coatings
High Temperature In-Situ X-ray Analysis of a Lean Duplex Stainless Steel
Materials for Facilities Liquefied Petroleum Gas as NFPA
PAN-27: Blends of PVDF with Its Processing Waste: Study of the Mechanical Properties of the Blends Thermally Aged
Structural Integrity of Pipelines
The Corrosion Behavior of Newly Developed API X120 Pipeline Steel in H2S and Moderate Temperature Environments

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