Role of Post-Treatment in Improved Corrosion Behavior of Trivalent Chromium Protection (TCP) Coating Deposited on Aluminum Alloy 2024-T3

2017 ◽  
Vol 164 (6) ◽  
pp. C276-C284 ◽  
Author(s):  
Marion Ely ◽  
Jolanta Światowska ◽  
Antoine Seyeux ◽  
Sandrine Zanna ◽  
Philippe Marcus
Keyword(s):  
Aluminum Alloy ◽  
Corrosion Behavior ◽  
Trivalent Chromium ◽  
Post Treatment ◽  
Aluminum Alloy 2024

Computational and Experimental Insights into the Role of Acidic Molecules on the Corrosion Behavior on 7A46 Aluminum Alloy

2021 ◽  
Vol 21 (4) ◽  
pp. 2221-2233
Author(s):  
Yaru Liu ◽  
Qinglin Pan ◽  
Xiangdong Wang ◽  
Ye Ji ◽  
Qicheng Liu ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Corrosion Behavior ◽  
First Principles ◽  
First Principles Calculations ◽  
Corrosive Media ◽  
Corrosion Depth ◽  
Corrosion Mechanisms ◽  
Nanoscale Level

The corrosion mechanisms for different corrosive media on the aged 7A46 aluminum alloy were systematically investigated at nanoscale level. The combination of empirical intergranular and exfoliation corrosion behavior was employed, and coupled with first-principles calculations. Results revealed that the dispersed distribution of matrix precipitates (MPs) leads to the enhancement of the corrosion resistance pre-ageing (PA) followed by double-ageing (PA-DA) alloy. The deepest corrosion depth of PA-DA alloy was in hydrochloric acid, and the calculation result demonstrates that the passivation effect in combination with the accumulation of corrosion products in nitric acid protect the PA-DA alloy from further corrosion.

Role of Tartaric Acid on the Anodizing and Corrosion Behavior of AA 2024 T3 Aluminum Alloy

2009 ◽  
Vol 156 (4) ◽  
pp. C147 ◽  
Author(s):  
M. Curioni ◽  
P. Skeldon ◽  
E. Koroleva ◽  
G. E. Thompson ◽  
J. Ferguson
Keyword(s):  
Aluminum Alloy ◽  
Tartaric Acid ◽  
Corrosion Behavior ◽  
Aa 2024

Role of hydrogen and humidity in the torsional fatigue of aluminum alloy 2024-T351

1985 ◽  
Vol 73 ◽  
pp. 131-138 ◽  
Author(s):  
T.S. Sudarshan ◽  
M.R. Louthan ◽  
T.A. Place ◽  
H.H. Mabie
Keyword(s):  
Aluminum Alloy ◽  
Torsional Fatigue ◽  
Aluminum Alloy 2024

Role of Alloy Matrix and Dispersoid on Corrosion Behavior of Cast Aluminum Alloy Composites

CORROSION ◽  
1998 ◽  
Vol 54 (2) ◽  
pp. 129-134 ◽  
Author(s):  
O. P. Modi ◽  
M. Saxena ◽  
B. K. Prasad ◽  
A. K. Jha ◽  
S. Das ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Corrosion Behavior ◽  
Cast Aluminum Alloy ◽  
Cast Aluminum ◽  
Alloy Matrix

scholarly journals Role of Crack-Tip Residual Stresses in Stress Corrosion Behavior of Pre-stressing AA7020

2019 ◽  
Vol 9 (03) ◽  
Author(s):  
Ashish Thakur
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Residual Stresses ◽  
Stress Corrosion ◽  
Corrosion Behavior ◽  
Stress Corrosion Cracking ◽  
Crack Tip ◽  
Corrosion Cracking ◽  
Compressive Residual Stresses

This paper analyzes stress corrosion cracking (SCC) of pre-cracked samples in the presence of compressive residual stresses generated in the vicinity of the crack tip during fatigue pre-cracking. Research focuses on the role of cracktip residual stresses of compressive nature, generated by fatigue loading, in stress corrosion cracking of pre-cracked samples of medium high strength aluminum alloy 7020 subjected to localized anodic dissolution and hydrogen assisted cracking. Fatigue pre-cracking load on the samples generates compressive residual stresses in the vicinity of the crack tip which improve the stress corrosion behavior of the aluminum alloy by delaying either the metal dissolution or the hydrogen entry, thus increasing the fracture load in an aggressive environment. The rice model of the residual stress distribution in the vicinity of a crack tip may be usedto explain these retardation effects by estimating the stress level and plastic zone size. Microscopically, compressive residual stress produce a transition topography between the fatigue pre-crack and the cleavage-like (unstable) fracture mode.

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