Menu
Search
Filters
Close
Menu

08496 The Effect of Metallurgical Factors on SSC of High Strength PIpeline Steel

Picture for 08496 The Effect of Metallurgical Factors on SSC of High Strength PIpeline Steel
Available for download
Product Number: 51300-08496-SG
ISBN: 08495 2008 CP
Author: Wan Keun Kim, Kyoo Young Kim, Tae Won Yun, and Boo Young Yang
Publication Date: 2008
$0.00
$20.00
$20.00
Sulfide stress cracking (SSC) is a kind of hydrogen related problem of pipeline steels for transportation of crude oil and natural gas containing hydrogen sulfide. To improve SSC resistance, the various techniques during steel making processes are required such as: addition of proper alloying elements, microstructure control, high cleanness and Ca treatment. However, the effect of metallurgical factors on SSC is not clearly understood in a lot of reports for improvement of SSC resistance. In this study, SSC resistance of three high strength steel plates with different microstructures was evaluated by using NACE TM0177A method. Failure behavior of SSC was investigated by observing fractured surfaces using optical microscopy (OM) and scanning electron microscopy (SEM). SSC property was discussed in terms of metallurgical parameters such as: primary microstructure, second phases and inclusions. Results showed that in the case of steels having the same oxide inclusion level, the hard microstructure is more resistant than the soft microstructure to SSC. SSC fracture mode is the type I SSC. Cracks parallel and perpendicular to the loading axis were primarily related with inclusions including Al, Ca and oxide. In particular, TiNb(C,N) with size over 2 µm as a large precipitate acted as nucleation sites of cracks perpendicular to the loading axis and it increased SSC sensitivity.
Sulfide stress cracking (SSC) is a kind of hydrogen related problem of pipeline steels for transportation of crude oil and natural gas containing hydrogen sulfide. To improve SSC resistance, the various techniques during steel making processes are required such as: addition of proper alloying elements, microstructure control, high cleanness and Ca treatment. However, the effect of metallurgical factors on SSC is not clearly understood in a lot of reports for improvement of SSC resistance. In this study, SSC resistance of three high strength steel plates with different microstructures was evaluated by using NACE TM0177A method. Failure behavior of SSC was investigated by observing fractured surfaces using optical microscopy (OM) and scanning electron microscopy (SEM). SSC property was discussed in terms of metallurgical parameters such as: primary microstructure, second phases and inclusions. Results showed that in the case of steels having the same oxide inclusion level, the hard microstructure is more resistant than the soft microstructure to SSC. SSC fracture mode is the type I SSC. Cracks parallel and perpendicular to the loading axis were primarily related with inclusions including Al, Ca and oxide. In particular, TiNb(C,N) with size over 2 µm as a large precipitate acted as nucleation sites of cracks perpendicular to the loading axis and it increased SSC sensitivity.
Product tags
Also Purchased
Picture for High strength steel SSC evaluation in mild sour environments at ambient and high temperatures
Available for download

51318-10920-High strength steel SSC evaluation in mild sour environments at ambient and high temperatures

Product Number: 51318-10920-SG
Author: James Wei / Manuel Gonzalez / Brian Chambers / Boris Thomas
Publication Date: 2018
$20.00

There is an increasing need to define the operating envelope for materials typically used as oil country tubular goods. This paper reports results of sulfide stress cracking (SSC) tests that were performed in mild sour environment at temperatures below 107°C.
Picture for 01077 IMPROVEMENT OF RESISTANCE TO SSC
Available for download

01077 IMPROVEMENT OF RESISTANCE TO SSC INITIATION AND PROPAGATION OF HIGH STRENGTH OCTG THROUGH MICROSTRUCTURE AND PRECIPITATION CONTROL

Product Number: 51300-01077-SG
ISBN: 01077 2001 CP
Author: G. Lopez Turconi, G. Echaniz G. Cumino, E. Anelli, L. Scoppio T. Perez, C. Morales
$20.00
Picture for 08497 A Study of Pressure Limits of Double Q&T P110/Q125 in Low H2S Environments
Available for download

08497 A Study of Pressure Limits of Double Q&T P110/Q125 in Low H2S Environments

Product Number: 51300-08497-SG
ISBN: 08497 2008 CP
Author: Ming Gao, Ravi Krishnamurthy, David Lewis, and Bruce Urband
Publication Date: 2008
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support