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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Pan American Materials Congress: Materials for Oil and Gas Industry
Presentation Title Dynamic Transformation and Retransformation during the Simulated Plate Rolling of an X70 Pipeline Steel
Author(s) Samuel Filgueiras Rodrigues, Clodualdo Aranas Jr., Fulvio Siciliano, John J Jonas
On-Site Speaker (Planned) Samuel Filgueiras Rodrigues
Abstract Scope The controlled rolling of pipeline steels involves pancaking the austenite and then subjecting it to accelerated cooling. However, the formation of ferrite during rolling decreases the amount of austenite available for microstructure control. Here the formation of ferrite during rolling is simulated using a five-pass rolling schedule applied by means of torsion testing. The first and last pass temperatures were 920 and 860 C with 15 degrees of cooling between passes. All of the rolling was carried out above the Ae3 temperature of 845 C that applies to this steel. Interpass times of 10 and 30 seconds were employed, which corresponded to cooling rates of 1.5 and 0.5 C/s, respectively. Samples were quenched before and after the first, third, and fifth passes in order to determine the amount of dynamic ferrite produced in a given pass. The amounts of dynamic ferrite formed and retained increased with pass number. The amounts of ferrite that retransformed increased with pass number. The simulations indicate that ferrite is unavoidably produced during plate rolling and that the microstructures present at the initiation of accelerated cooling do not consist solely of austenite.
Proceedings Inclusion? Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Study on the Mechanisms Responsible for Dynamic Strain Aging Phenomenon in Inconel 718 Superalloy
Adsorption of Organosulfur Compounds on Doped Boron Nitride Nanostructures
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
Effect of Heat Input on the Microstructure and Toughness of Welded API Pipelines
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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