Influence of heat treatments on the susceptibility of 9%Ni low carbon steel to sulfide stress corrosion cracking

2020 ◽  
Vol 113 ◽  
pp. 104554
Author(s):  
R.P.C. Cunha ◽  
C. Barbosa ◽  
R.F. Barrozo ◽  
J.A.C Velasco ◽  
S.S.M. Tavares
2018 ◽  
Vol 55 (5B) ◽  
pp. 210
Author(s):  
Nguyen Thi Le Hien

Cracking corrosion of API 5CT Grade L80 Type 1 low carbon steel has been studied in a in brine solutions with H2S 12.3 psia and CO2 9.4 psia. Testing was performed according to the methodology reference from the NACE TM0177, Bent-beam test method in solution B for stress corrosion cracking and sulfide stress corrosion cracking test and NACE TM0284, immersion test method in solution A for Hydrogen induced cracking test.The obtained results showed pitting and general corrosion at both temperatures of 24 oC and 82 oC. In case of stress corrosion cracking (SCC) testing at 82 °C, microscopy of the samples tested for 30 days developed pitting corrosion in the surface and cracking starting in the surface of the samples. The cracks, mostly found in the middle of the samples where the maximum bending occurred. General corrosion was also observed in the samples, with significant decrease in the dimensions of the samples after testing (due to general corrosion). However, in case of sulfide stress corrosion (SSC) and hydrogen induced cracking (HIC) tests at room temperature (24-25 oC), no cracking was observed on the sample. 


CORROSION ◽  
2008 ◽  
Vol 64 (12) ◽  
pp. 939-948 ◽  
Author(s):  
H. Mitsui ◽  
R. Takahashi ◽  
H. Asano ◽  
N. Taniguchi ◽  
M. Yui

2011 ◽  
Vol 1 (2) ◽  
Author(s):  
S. Sujita

The aim of this study is to investigate the effect of shot peening on stress corrosion cracking of a low carbon steel in ocean water environment. The dimension of specimens were prepared in accordance with the ASTM G39. The hardness testing was carried out using microvickers with 0,25 kgf load in the longitudinal direction. The corrosion cracking test was immersed into artificial sea water for about 7 months. The test shows that the pitting corrosion is dominantly nucleated at the metal film interface. The biggest pitting corrosion was occurred under the static loading of 70 for the specimens unpeened. The presence of pitting corrosion promotes stress corrosion cracking. The cracking has a intergranular branched morphology which is typical for the chloride cracking of low carbon steel


2018 ◽  
Vol 7 (1) ◽  
pp. 20170129 ◽  
Author(s):  
S. K. Kolawole ◽  
J. D. Obayemi ◽  
F. O. Kolawole ◽  
A. B. O. Soboyejo ◽  
W. O. Soboyejo

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