Efecto del H2S en la Susceptibilidad al Agrietamiento de Dos Aceros Microaleados para Tubería
Abstract
Cracking in sour media modes were observed, and these were related mainly to the microstructure produced during the thermomechanical process of two microalloyed steels grade API X 52. Through the use of linear elastic fracture mechanics modified specimens. Steels loaded at similar initial stress intensity factors showed different cracking modes that were related directly to their different microstructures. Steels microstructures indicate different fabrication routes. Testing temperature played an important role on switching the cracking characteristics being remarkable by the ferrite-pearlite steel microstructure. A banded microstructure is susceptible to the effects of hydrogen at room T. While, an acicular ferrite microstructure with carbides patches at grain boundaries is susceptible to anodic dissolution in front of the crack tip, no matter the temperature being tested.
Key words: microalloyed steels, sour service, cracking modes, microstructure.
References
[1] B. Craig, 1990. Limitations of Alloying to Improve the Treshold for Hydrogen Stress Cracking of Steel,
[2] Hydrogen Effects on Material Behavior, N.R. Moody and A.W. Thompson, Ed., TMSAIME, Warrendale, PA, 1990, p. 955.
[3] BT. Lu, 2013, Crack growth model for pipeline steels exposed to near-neutral pH groundwater, Fatigue & Fracture of Engineering Materials & Structures Volume 36, Issue 7, pages 660–669, July 2013.
[4] G.M. Pressoyre, R.T. Blondeau, G. Primon, and L. Cadion, Very Low Inclusion and Impurity Content Steels as a Solution to Resist Sour Environments. Proc. 1st Int. Conf. Current Solutions to Hydrogen Problems in Steels. C.G. Interrater and G. M. Pressourye, Ed., ASM International, 1982, p. 212.
[5] Gangloff, R.P. 2003, ”Hydrogen Assisted Cracking of High Strength Alloys”, in Comprehensive Structural Integrity, I. Milne, R.O. Ritchie and B. Karihaloo, Editorsin-Chief, J. Petit and P. Scott, Volume Editors, Vol. 6, Elsevier Science, New York, NY, pp. 31-101 (2003).
[6] H. Asahi, M. Ueneo, and T. Yonezawa, 1994, Prediction of Sulfide Stress Cracking in High Strength Tubulars, Corrosion, Vol 50 (No. 7), p. 537.
[7] H.K. Burnmaun 1990, Hydrogen Effects on Material Behavior in TMS AIME Conf. Proc., eds. N.R. Moody, A.W. Thompson (Warrendale P.A: TMS-AIME 1990). P. 639
[8] JM Tartaglia, KA Lazzari, GP Hui, 2008, A comparison of mechanical properties and hydrogen embrittlement resistance of austempered vs quenched and tempered 4340 steel Metallurgical and Materials Transactions A, March 2008, Volume 39, Issue 3, pp 559-576
[9] J.M. Gray, T. Ko, S. Zhang (Materials Park, OH: ASM International, 1985), p. 457.
[10] Y Lee, RP Gangloff, 2007,Measurement and Modeling of Hydrogen Environment– Assisted Cracking of Ultra-High-Strength Steel, Metallurgical and Materials Transactions A, 2007 – Springe, Metallurgical and Materials Transactions A, September, Volume 38, Issue 13, pp 2174-2190
[11] Oda Y, Noguchi 2005,Observation of hydrogen effects on fatigue crack growth behavior in an 18Cr-8Ni austenitic stainless steel, H - International journal of fracture, 2005, 132, p.99-113
[12] Osman T.M., Gracia, C.I., (2001), Nb-Beraing interstitiual Free Steels, Processing, Structure and properties, Niobium, Science and Technology, Proceedings of the International Symp. Niobium 2001, p.699-726
[13] S.R. Novak and S. T. Rolfe 1969, Corrosion, 1969, vol 4, p 701.
[14] Samerjit Homrossukon, Sheldon Mostovoy and Judith A. Todd, 2009, Investigation of Hydrogen Assisted Cracking in High and Low Strength Steels, J. Pressure Vessel Technol. 131(4), (2009)
[15] T. Hara, S. Takaki 1997, in THERMEC´97, Proc of the 1997 TMS Symp., eds. T. Chandra and T. Sakai (TMS Warrendale, P.A.) p. 177, 1997
[16] T. Hara, S. Takaki, G. Buzzichelli, M. Potremoll, A. Aprile, C. Jannone, A. Pozzi, 1985, Development of High-Strength Steels for Structural and Line Pipe Applications Throught Higly Controlled Processes, In Proc. HSLA Steels: Metallurgy and applications, eds. 1985
[17] Y. Kobayashi, 1994, Recent High Performance Line Pipe for Oil/Gas Production, Proc. VIII Seminar Mexico-Japan ‘94, K. Kawakami, Ed., JICA, Mexico City, p. 9-1-9-12.
[18] W.F. Deans and C.E. Richards, 1979, J. Test. Eval., 1979, vol. 7, p. 147