Calculation of the influence of heat treatment and phase transformations on stresses and deformations in multiple‑pass welding of a pipe with a diameter of 48 mm and a thickness of 5 mm of steel grade p91
https://doi.org/10.21122/1683-6065-2025-4-93-104
Abstract
High‑temperature steel P91 with a high chromium content is used in the production of boiler and steam line elements that operate under steam pressure up to 31 MPa and at temperatures up to 600 °C. However, the increased diffusion creep, which causes the formation of type III or IV cracks in the weldment heat‑affected zone (HAZ), significantly reduces the service life of welded structures made of this steel. One of the causes of crack formation in steam pipelines during operation is the presence of residual tensile stresses after welding. The purpose of the study: to determine the influence of pre‑ and post‑weld heat treatment on residual stresses and deformations during multi‑pass welding of pipe blanks.
About the Authors
A. L. Minkov
Belarusian National Technical University
Belarus
Belarus
Minsk,
Belarus,
65, Nezavisimosti аve.
M. N. Filippov
Belarusian National Technical University
Belarus
Belarus
Minsk,
Belarus,
65, Nezavisimosti аve.
References
1. Hurtado‑ Noreña C., Danón C.A., Luppo M. I., Bruzzoni P. Evolution of Minor Phases in a P91 Steel Normalized and Tempered at Different Temperatures. International Congress of Science and Technology of Metallurgy and Materials, SAM–CONAMET, 2013, pp. 143–146.
2. Khromchenko F.A. Resurs svarnyh soedinenij paroprovodov [Resource of Welded Joints of Steam Pipelines]. Moscow, Mashinostroenie Publ, 2002, 352 p.
3. Panteleenko F. I., Zelenin V.A., Minkov A. L. Vlijanie rezhimov predvaritel’noj termicheskoj obrabotki na strukturu i mehanicheskie svojstva svarnyh soedinenij iz stali R91 [The Influence of Preliminary Heat Treatment Regimes on the Structure and Mechanical Properties of Welded Joints Made of P91 Steel]. Sovremennye metody i tekhnologii sozdaniya i obrabotki materialov: sb. nauch. tr. Kn. 2 = Modern Methods and Technologies for the Creation and Processing of Materials Collection of Scientific Papers. Book 2. Minsk, Physical‑Тechnical Institute of the National Academy of Sciences of Belarus, рр.48–63.
4. Filippov M. N., Minkov A. L. Modelirovanie raspredelenija temperatury pri TIG svarke truby iz stali R91 dlja opredelenija razmera hrupkogo uchastka ZTV posle kazhdogo prohoda [Modeling of temperature distribution during TIG welding of a pipe made of steel P91 to determine the size of the brittle zone after each pass]. Mezhdunarodnaja molodezhnaja nauchnaja konferencija «XXVII Tupolevskie chtenija (shkola molodyh uchenyh)», posvjashhennoj 80‑letiju Pobedy v Velikoj Otechestvennoj vojne = International Youth Scientific Conference “XXVII Tupolev Readings (School of Young Scientists), dedicated to the 80th anniversary of Victory in the Great Patriotic War, 2025, no. 1, pp. 1–6.
5. Yang, K.; Zhang, Y.; Zhao, J. Elastoplastic fracture analysis of the P91 steel welded joint under repair welding thermal shock based on XFEM. Metals 2020, 10, 1285 p.
6. Karhin V.A. Teplovye processy pri svarke [Thermal processes in welding]. St.‑ Petersburg, Petersburg Polytechnic University Publ., 2015, 572 p.
7. Goldak, J.A. Computational Welding Mechanics, Springer Science+Business Media, Inc. USA, 2005, Р. 325.
Review
For citations:
Minkov A.L., Filippov M.N. Calculation of the influence of heat treatment and phase transformations on stresses and deformations in multiple‑pass welding of a pipe with a diameter of 48 mm and a thickness of 5 mm of steel grade p91. Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY). 2025;(4):93-104. (In Russ.) https://doi.org/10.21122/1683-6065-2025-4-93-104
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