Abstract
The effect of different post-weld heat treatment (PWHT) on microstructure, low temperature impact toughness fracture morphology and hardness, of 309L/E5015 fusion zone of bimetal lined pipe weld was investigated by using optical microscopy (OM), electron probe microscope analysis (EPMA), scanning electron microscopy (SEM) and hardness test. The results showed that the microstructure of the fusion zone of the 309L/E5015 under non thermal treatment was martensite, and the lath was fine acicular. At 550 °C, the lath of martensite was bulky, and the feature was obvious; at 650 °C, the microstructure was tempered martensite, and the microstructure was obviously refined; at 750 °C, the microstructure was further refined and became multilateral; at 850 °C, the martensite microstructure was gradually analyzed, and the carbides were dispersed. With the increase of heat treatment temperature after welding, the element distribution gradient of fusion zone slowed down and the hardness first decreased and then increased. At 750 °C, the weld had the best toughness, because the lath of martensite was multilateral, and the hardness reached the qualified range, and the low temperature impact energy was maximum than other temperatures.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
M.X. Lu, Z.Q. Bai, X.W. Zhao et al., Actuality and typical cases for corrosion in the process of extraction, gathering, storage and transmission for oil and gas. J. Corros. Protect. 23(3), 105–113 (2002)
M.B. Kermani, A. Morshed, Carbon dioxide corrosion in oil and gas production-a compendium. J. Corros. 59(8), 659–683 (2003)
M.H. Jin, The research method of corrosion inhibitor of pipeline. J. Mater. Protect. 06, 26–29 (1993)
F.M. Song, A comprehensive model for predicting CO2 corrosion rate in oil and gas production and transportation systems. J. Electrochim. Acta 55(3), 689–700 (2010)
B.S. Huang, Z.K. Wang, State of art and trends of Internal coating technology of oil and gas pipeline. J. Corros. Sci. Protect. Technol. 04, 345–348 (2012)
J.C. Qi, M.P. Wang, Characteristic and application of the pipe that carbon steel inside lining stainless steel compounds. J. China Build. Mater. Sci. Technol. 3, 23–25 (2005)
F. Yu, J.P. Qin, Application of dual metal pipe in pipe line service. J. Steel Pipe 29(1), 34–36 (2000)
M.A. Spence, C.V. Roscoe, Bi-metal CRA-lined pipe employed for north sea field development. J. Oil Gas J. 97(18), 80–88 (1999)
W.C. Chen, C.W. Petersen, Corrosion performance of welded CRA-lined pipes for flow lines. J. SPE Prod. Eng. 7(4), 375–378 (1992)
J.B. Liu, J.T. Jing, S.Q. Bao et al., Effect of heat treatment on microstructure and mechanical properties of bimetal clad pipe X60/2205. J. Mater. Heat Treat. 04, 125–127 (2009)
A.M. Torbati, R.M. Miranda, L. Quintino et al., Optimization procedures for GMAW of bimetal pipes. J. Mater. Process. Technol. 211(6), 1112–1116 (2011)
N.L. Wang, X.D. Pan, J. Xue, Welding procedure and resistant to corrosion properties for welded joint of 20/0Cr18Ni9 clad pipe. J. Weld. Joining 5, 23–26 (2003)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Liu, D., Ning, Y., Jiang, T., Sun, X. (2018). Effect of Post-weld Heat Treatment on Microstructure and Mechanical Properties of 309L/E5015 Fusion Zone of Bimetal Lined Pipe Weld. In: Han, Y. (eds) Advances in Materials Processing. CMC 2017. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-0107-0_42
Download citation
DOI: https://doi.org/10.1007/978-981-13-0107-0_42
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-0106-3
Online ISBN: 978-981-13-0107-0
eBook Packages: EngineeringEngineering (R0)