Utilizing Various Test Methods to Study the Stress Corrosion Behavior of Al-Li-Cu Alloys

2008 ◽  
pp. 173-173-29 ◽  
Author(s):  
PP Pizzo ◽  
RP Galvin ◽  
HG Nelson
Keyword(s):  
Stress Corrosion ◽  
Corrosion Behavior ◽  
Test Methods ◽  
Cu Alloys

scholarly journals Stress corrosion behavior of friction stir welding joint of 7N01 aluminum alloy

2021 ◽  
Vol 15 ◽  
pp. 1130-1144
Author(s):  
Yuzhe Pan ◽  
Yu Wang ◽  
Fuqiang Guo ◽  
Tiehao Zhang ◽  
Kenji Matsuda ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Stress Corrosion ◽  
Corrosion Behavior ◽  
Friction Stir ◽  
Welding Joint

Microstructure and Stress Corrosion Behavior of MIG Welded Joint Al–Zn–Mg Alloy

2018 ◽  
pp. 325-335
Author(s):  
Lingying Ye ◽  
Wenqing Yang ◽  
Chuqi Jiang ◽  
Huaqiang Lin ◽  
Shengdan Liu ◽  
...  
Keyword(s):  
Stress Corrosion ◽  
Corrosion Behavior ◽  
Welded Joint ◽  
Mg Alloy

THE EFFECT OF IMMERSION TIME ON THE CORROSION BEHAVIOR OF SUS304 IN BRINE USING HALF-CELL POTENTIAL MEASUREMENT

2016 ◽  
Vol 78 (6-9) ◽  
Author(s):  
Saber Rashid ◽  
N. Islami ◽  
A. K. Ariffin ◽  
M. Ridha ◽  
S. Fonna
Keyword(s):  
Stress Corrosion ◽  
Corrosion Behavior ◽  
Immersion Time ◽  
Plastic Anisotropy ◽  
Internal Stresses ◽  
Half Cell ◽  
Cell Potential ◽  
Potential Measurement ◽  
G 38 ◽  
The Impact

The aim of this study is to investigate the impact of immersion time, at different time values for two cases, with stressed and no stressed on materials. This study is conducted using SUS304 material with the presence of 3.5% NaCl at the range of stresses for the specimens lower than the yield strength.  The geometry of the C-ring specimen was selected for 18.974 mm and 1.244 mm for the outer diameters and the thickness respectively. The immersion time effect was investigated using the half-cell potential measurement following the ASTM G-38 standard. The approach of corrosion environment was applied to resemble the condition of loading history. Three levels of stresses were designed and applied in finite element analysis and the results known as the parameters of stress-corrosion measurement. The ASTM G-38 standard is prominent for making C-ring stress-corrosion for elastic stress analysis. The stress-corrosion test was performed at two parameters, fixed stress and no stress. The value of stresses for fixed stress was chosen for 179.199 MPa, 328.665 MPa and 460.131 MPa, correspondingly. The immersion time were selected from 0, 10 and 30 days. The electrochemical result shows that the immersion time did not affect vastly to the corrosion behavior for no stress-corrosion compared with fixed stress. The corrosion rate increases proportionally with the time immersion increments due to the inability of the steel layer protection to regenerate itself. Subsequently, it is also due to the metal was exposed to plastic deformation that resulting the internal stresses due to the plastic anisotropy of the grains.

A Three-Dimensional Coupled Finite Element Model for the Simulation of Stress Corrosion on Pipeline Steel

2019 ◽  
Author(s):  
Dongxu Sun ◽  
Ming Wu ◽  
Fei Xie ◽  
Ke Gong
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Stress Corrosion ◽  
Corrosion Behavior ◽  
Pipeline Steel ◽  
Three Dimensional ◽  
Element Model ◽  
Circumferential Direction ◽  
The Self ◽  
Corrosion Defect

Abstract In this study, a three-dimensional finite element model was constructed to study the stress corrosion behavior of pipeline steel. Stress analysis and electrochemical calculation were incorporated into the model through multiphysics field coupling technique. Tensile property and electrochemical corrosion behavior of X70 pipeline steel were measured by experiments to formulate the model. The modeling results show that the corrosion is accelerated on the surface of corrosion defect where the stress tends to concentrate because of mechanoelectrochemical effect. The effect of elastic strain on corrosion enhancement is not obvious. The plastic deformation on defect bottom increases the corrosion rate significantly, especially for the conditions with high operating pressure or large defect depth. The corrosion current distribution indicated that the “self-acceleration effect” exists on corrosion defect. This effect makes the corrosion develop to depth and the shape of corrosion defects is more likely to cause stress concentration, and finally induces corrosion perforation or cracking. The two directions, i.e. axial and circumferential direction, have the different stress corrosion behaviors. The “self-acceleration effect” is more obvious on circumferential direction than that on axial direction, which can explain the phenomenon that there are mostly axial stress corrosion cracks on the pipeline in field.

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