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Keywords: propagation
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Proceedings Papers

Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13396
... barrier property as a function of exposure times in the three test environments. The corrosion initiation and underpaint corrosion morphology are influenced by the mode of testing. Additional effect from the coating system and presence of oxidants govern corrosion propagation. INTRODUCTION Organic...
Proceedings Papers

Paper presented at the CORROSION 2018, April 15–19, 2018
Paper Number: NACE-2018-11330
... management Cr content alloy Corrosion Inhibition materials and corrosion riser corrosion Corrosion Management Houston localized corrosion resistance shoesmith Publication Division crevice corrosion manuscript repassivation corrosion resistance propagation corrosion-resistant alloy...
Proceedings Papers

Paper presented at the CORROSION 2018, April 15–19, 2018
Paper Number: NACE-2018-11634
... relaxation during SCC precludes extended monitoring. However, this sensor allows for propagation of SCC to be monitored since the electrode experiences a dynamic applied stress. This low cost test system permits detection of degradation across multiple time and length scales and can be tailored...
Proceedings Papers

Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9147
...- normal distributions for both materials. Only a small fraction of cracks within the total number of cracks formed would propagate deep into the steel. It was revealed that the effect of CP on the occurrence of SCC in X80 and X100 steels was different. For X80 steel, CP exhibited an inhibiting effect...
Proceedings Papers

Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9187
..., hydrogen significantly promotes anodic dissolution in the potential range where the active- to-passive transition occurs. The electrochemical noise detected in the SCC process implies that the crack propagation process is discontinuous and hydrogen charging can raise the frequency of film breakdown...
Proceedings Papers

Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9328
... Cracking (SSC) when exposed to a sour environment. Basically, the failure mechanism of SSC includes an initiation step followed by a propagation step of a crack. Focusing on the latter, it is essential to model the conditions for crack propagation in order to discern the levers that enable to avoid...
Proceedings Papers

Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9406
... resistance metals & mining riser corrosion localized corrosion texas 77084 manuscript Microstructure localized corrosion resistance AWM specimen Mishra propagation Uniform and Localized Corrosion Study of Base Material, All-Weld-Metal and Heat-Affected-Zone of Corrosion-Resistant Ni-Cr-Mo...
Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7667
... to no information on the corrosion performance of their welds and heat-affected-zones, even though these are typically the weak regions for corrosion initiation and propagation. In the present study, the corrosion performance of base metal (BM), all-weld-metal (AWM) and heat-affected-zone (HAZ) samples of B-3 (UNS...
Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7707
... at the crevice tip then diffuses toward the crevice mouth. During this stage only minimal damage occurs. In stage three, once the critical crevice solution reaches a critical distance from the crevice mouth equivalent to IR* rapid propagation begins. We show that with appropriate experimental input data...
Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7901
... propagation simulated geothermal environment fatigue behavior cr-mn stainless steel crack detection Fatigue Behavior under Multiaxial Loading and Simulated Geothermal Environment of Cr-Mn Stainless Steel and UNS N07718 Helmuth Sarmiento Klapper Baker Hughes Baker Hughes Strasse 1 Celle, 29221 Germany...
Proceedings Papers

Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7253
... Corrosion Management electrode propagation shoesmith composition crevice reduction dissolution The Influence of Composition on the Crevice Corrosion of Ni-Cr-Mo Alloys N. Ebrahimi, P. Jakupi, J.J. Noël, D.W. Shoesmith Department of Chemistry and Surface Science Western, The University of Western...
Proceedings Papers

Paper presented at the CORROSION 2014, March 9–13, 2014
Paper Number: NACE-2014-3870
...% confidence limits indicated that fugacity was the primary parameter for control of sulfide stress crack propagation for a casing steel. Incorporating fugacity determinations into well assessments potentially provide opportunities for use of lower grades of materials, especially for high pressure gas wells...
Proceedings Papers

Paper presented at the CORROSION 2013, March 17–21, 2013
Paper Number: NACE-2013-2235
... ABSTRACT A stochastic model is developed to assess the susceptibility of series 300 stainless steels to stress corrosion cracking under sour service conditions. The model is based on the hypothesis that the critical conditions for crack initiation and propagation are satisfied...
Proceedings Papers

Paper presented at the CORROSION 2013, March 17–21, 2013
Paper Number: NACE-2013-2361
... Upstream Oil & Gas pit depth different concentration ph 5 Publication Division permission manuscript propagation South Creek Drive Investigation of Pitting Corrosion and Inhibition in Sweet Conditions Xinming Hu Wood Group Integrity Management, Compass Point, 79 -87 Kingston Road, Staines...
Proceedings Papers

Paper presented at the CORROSION 2013, March 17–21, 2013
Paper Number: NACE-2013-2615
...) at a later time. The methodology and associated model accounts for previous inspection data, randomness of pit generation and propagation, and pit growth rate as a function of time. The model results could be used to estimate probability of component failure due to pitting corrosion and thresholds...
Proceedings Papers

Paper presented at the CORROSION 2012, March 11–15, 2012
Paper Number: NACE-2012-1361
...-in operations and existence of crevice at the flange interface. Stainless steels are susceptible to crevice corrosion, and based on this corrosion risk, effect of temperature (4oC, 20oC and 60oC) on initiation and propagation of crevice corrosion of three kinds of stainless steels (AISI 316L, UNS S31803 and UNS...
Proceedings Papers

Paper presented at the CORROSION 2012, March 11–15, 2012
Paper Number: NACE-2012-1329
... and Biomolecular Engineering Ohio University ABSTRACT The localized dissolution kinetics of the reactions taking place within an active pit are used to explain the stability of the pit propagation. Modeling the chemical kinetics of these reactions as a Markov Stochastical process, an algorithm was developed...

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