Recrystallization of Cold Pilgered Heat Resistant Austenitic Stainless Steel Seamless Tubes Under Anisothermal Annealing Conditions

Iza-Mendia, A.; Gutierrez, I.; Rodríguez, R.; López, A.

doi:10.1007/978-3-319-48770-0_30

A. Iza-Mendia⁷,
I. Gutierrez⁷,
R. Rodríguez⁸ &
…
A. López⁸

1773 Accesses

Abstract

The softening behaviour of heat resistant austenitic stainless steel grades used in boiler equipments in reheater and superheater sections, either under supercritical steam conditions, or in highly corrosive environments is analyzed. Isothermal treatments were carried out at laboratory in a wide range of temperatures on specimens machined from the wall of cold pilgered tubes manufactured by Tubacex.

Microhardness measurements were carried out in order to estimate the softened fraction. By means of quantitative metallography the recrystallized fraction was also obtained for comparison. Besides, laboratory tests simulating the industrial thermal cycles were performed and the fractional softening determined for interrupted tests.

Predictions of the anisothermal recrystallization model are in good agreement with the experimentally obtained results for the material under industrial thermal cycles. As a main objective, the model can be applied in order to estimate the temperature for 99% recrystallization as a function of the heating rate for industrial conditions.

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Authors and Affiliations

Ceit-IK4 and Tecnun (University of Navarra), Manuel Lardizabal 15, 20018, San Sebastián, Basque Country, Spain
A. Iza-Mendia & I. Gutierrez
Tubacex, Tres Cruces 8, 01400, Llodio, Álavia, Spain
R. Rodríguez & A. López

Authors

A. Iza-Mendia
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I. Gutierrez
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R. Rodríguez
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A. López
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Editors and Affiliations

Carnegie Mellon University, USA
Elizabeth A. Holm (Professor of Materials Science and Engineering), Gregory S. Rohrer Ph.D. & Anthony D. Rollett (Professor of Materials Science and Engineering) (Professor of Materials Science and Engineering), & (Professor of Materials Science and Engineering)
Research and Technology Center, U. S. Steel Corporation, USA
Susan Farjami (Senior research engineer) (Senior research engineer)
Robert Morris University, Pittsburgh, PA, USA
Priyadarshan Manohar (Associate Professor of Engineering and Co-Director Research and Outreach Center (ROC) (Associate Professor of Engineering and Co-Director Research and Outreach Center (ROC)
University of Pennsylvania, USA
Gregory S. Rohrer Ph.D. & David Srolovitz Ph.D. (Member of the National Academy of Engineering, Fellow of MRS, TMS, ASM, Institute of Physics) & (Member of the National Academy of Engineering, Fellow of MRS, TMS, ASM, Institute of Physics)
Rutgers University, USA
David Srolovitz Ph.D. (Member of the National Academy of Engineering, Fellow of MRS, TMS, ASM, Institute of Physics) (Member of the National Academy of Engineering, Fellow of MRS, TMS, ASM, Institute of Physics)
Alcoa Technical Center, Pittsburgh, PA, USA
Hasso Weiland (Technical Fellow) (Technical Fellow)

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Iza-Mendia, A., Gutierrez, I., Rodríguez, R., López, A. (2016). Recrystallization of Cold Pilgered Heat Resistant Austenitic Stainless Steel Seamless Tubes Under Anisothermal Annealing Conditions. In: Holm, E.A., et al. Proceedings of the 6th International Conference on Recrystallization and Grain Growth (ReX&GG 2016). Springer, Cham. https://doi.org/10.1007/978-3-319-48770-0_30

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DOI: https://doi.org/10.1007/978-3-319-48770-0_30
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48626-0
Online ISBN: 978-3-319-48770-0
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