About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Developments in Plate and Line Pipe Steels
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| Presentation Title |
Microstructural Refinement of a HSLA Low-Nb Linepipe Steel Using Intensive Recrystallization-Controlled Rolling |
| Author(s) |
Gregorio Solis Bravo, Calixto I. Garcia |
| On-Site Speaker (Planned) |
Calixto I. Garcia |
| Abstract Scope |
The objective of this work was to compare and evaluate the effect of intensive recrystallization-controlled rolling (IRCR) versus the conventional controlled rolling (CCR) process on the microstructural and precipitation behavior of HSLA with Low-Nb and High-Nb steels. This study included classical austenite grain coarsening and the dissolution of precipitates. Simulation of multi-pass hot deformation using hot compression, torsion deformation and laboratory hot rolling experiments were conducted. The temperature of non-recrystallization, austenite conditioning and precipitation behavior were the central focus of this work. The characterization of roughing simulation specimens showed the well-known grain refinement behavior. As expected, IRCR specimens, which sustained 85% reduction during roughing in plane-strain hot deformation, refined their structure more than CCR specimens, with 75% reduction. The results of this study will be presented and discussed. |