INVESTIGATION OF THE MECHANISM OF STRESS CORROSION OF ALUMINUM ALLOYS

1964 ◽  
Author(s):  
G. C. English ◽  
William King
Keyword(s):  
Aluminum Alloys ◽  
Stress Corrosion

Stress corrosion cracking behaviour of 7xxx aluminum alloys: A literature review

2016 ◽  
Vol 26 (6) ◽  
pp. 1447-1471 ◽  
Author(s):  
A.C. UMAMAHESHWER RAO ◽  
V. VASU ◽  
M. GOVINDARAJU ◽  
K.V. SAI SRINADH
Keyword(s):  
Aluminum Alloys ◽  
Literature Review ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking

Computational Model of Mechano-Electrochemical Effect of Aluminum Alloys Corrosion

2021 ◽  
Author(s):  
Hessein Ali ◽  
Zachary Stein ◽  
Quentin Fouliard ◽  
Hossein Ebrahimi ◽  
Peter Warren ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Stress Corrosion ◽  
High Strength ◽  
Critical Issue ◽  
Localized Corrosion ◽  
Multiphysics Coupling ◽  
Electrochemical Effect ◽  
Corrosive Environments ◽  
Elastic And Plastic Deformation ◽  
Kinetics Of

Abstract Stress corrosion is a critical issue that leads to high costs in lost equipment and maintenance, affecting the operation and safety of aircraft platforms. Most aerospace structural components use the aluminum alloys 7xxx series, which contain Al, Cu, Zn, and Mg, due to the combined advantage of its high-strength and lightweight. However, such alloys, specifically AA7075-T4 and AA7075-T651, are susceptible to stress corrosion cracking (SCC) when exposed to both mechanical stresses and corrosive environments. SCC gives rise to a major technological challenge affecting aerospace systems as it leads to the degradation of mechanical properties. In addition, such corrosion presents an important yet complex modeling challenge due to the synergistic action of sustained tensile stresses and an aggressive environment. In light of this, we develop a finite element (FE) multiphysics model to investigate the interplay of mechanical loading and electrochemistry on the stress corrosion of aluminum alloys. The model includes a multiphysics coupling technique through which the kinetics of corrosion can be predicted in the presence of elastic and plastic deformation modes. The presented model provides useful information towards the kinetics of corrosion via tracking localized corrosion and stress distribution. Although the model is general, it has been made considering the characteristics of AA7xxx series, more specifically, taking AA7075.

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