Influence of Ultrasonic Nanocrystal Surface Modification on the Corrosion and Stress Corrosion Cracking Behavior of Low Carbon Steel (ASTM A139) Welded Joint in the Simulated District Heating Environment

CORROSION ◽  
10.5006/2429 ◽  
2017 ◽  
Vol 74 (1) ◽  
pp. 112-122 ◽  
Author(s):  
Yong-Sang Kim ◽  
Woo-Cheol Kim ◽  
Jung-Gu Kim
Keyword(s):  
Surface Modification ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Welded Joint ◽  
Low Carbon Steel ◽  
District Heating ◽  
Corrosion Cracking ◽  
Low Carbon ◽  
Cracking Behavior ◽  
Heating Water

The effect of ultrasonic nanocrystal surface modification (UNSM) on the corrosion and stress corrosion cracking behavior of low carbon steel (ASTM A139) welded joint in the simulated district heating water (internal heating water) were investigated. After UNSM treatment, the microstructures of welded joint were transformed from the grain boundary ferrite and widmanstätten ferrite to polygonal ferrite accompanied by grain refinement. In electrochemical tests, the corrosion resistance of the welded joint was increased after UNSM treatment as a result of the grain refinement and improved stability of the oxide film. The stress corrosion cracking behavior was measured by slow strain rate tests with accelerated anodic and cathodic reactions. The results indicated that the UNSM treatment had a significant effect on the corrosion condition, whereas UNSM had no effect on hydrogen embrittlement.

Susceptibility to Stress Corrosion Cracking for Low-Carbon Steel Welds in Carbonate-Bicarbonate Solution

CORROSION ◽  
2008 ◽  
Vol 64 (12) ◽  
pp. 939-948 ◽  
Author(s):  
H. Mitsui ◽  
R. Takahashi ◽  
H. Asano ◽  
N. Taniguchi ◽  
M. Yui
Keyword(s):  
Carbon Steel ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Low Carbon Steel ◽  
Corrosion Cracking ◽  
Low Carbon ◽  
Steel Welds

scholarly journals Pengaruh Perlakuan Shot Peening Terhadap Korosi Retak Tegang Baja Karbon Rendah Pada Lingkungan Korosif

2011 ◽  
Vol 1 (2) ◽  
Author(s):  
S. Sujita
Keyword(s):  
Carbon Steel ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Pitting Corrosion ◽  
Shot Peening ◽  
Sea Water ◽  
Water Environment ◽  
Low Carbon Steel ◽  
Corrosion Cracking ◽  
Low Carbon

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

Transitions from Pits to Cracks during Stress Corrosion Cracking in a 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
Keyword(s):  
Carbon Steel ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Low Carbon Steel ◽  
Corrosion Cracking ◽  
Low Carbon
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