Improvements in Strength and Stress Corrosion Cracking Properties in Aluminum Alloy 7075 via Low-Temperature Retrogression and Re-Aging Heat Treatments

CORROSION ◽  
2003 ◽  
Vol 59 (6) ◽  
pp. 520-528 ◽  
Author(s):  
C. P. Ferrer ◽  
M. G. Koul ◽  
B. J. Connolly ◽  
A. L. Moran
Keyword(s):  
Aluminum Alloy ◽  
Low Temperature ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Heat Treatments ◽  
Corrosion Cracking ◽  
Aluminum Alloy 7075

Susceptibility of Aluminum Alloy 7075 T6 to Stress Corrosion Cracking

2020 ◽  
Vol 14 (2) ◽  
Author(s):  
Jafar Taher Al-Haidary ◽  
Jamil Sami Haddad ◽  
Fadi Anton Alfaqs ◽  
Fouad Fakhri Zayadin
Keyword(s):  
Aluminum Alloy ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Aluminum Alloy 7075

Evaluating Stress-Corrosion Cracking Susceptibility Using a Torsion Test

2005 ◽  
Author(s):  
Robert A. Bayles ◽  
R. K. Singh Raman ◽  
Steven P. Knight ◽  
Jy-An Wang
Keyword(s):  
Fracture Toughness ◽  
Aluminum Alloy ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Torsion Test ◽  
Corrosion Cracking ◽  
Toughness Testing ◽  
Step Loading ◽  
Load Frame ◽  
Aluminum Alloy 7075

A torsion test has been devised that provides for plane strain constraint in small specimens during fracture toughness testing. This method has been extended for stress-corrosion cracking and a simple torsion load frame has been built to provide for step loading of the specimens. This paper describes using the torsion technique to measure KISCC for aluminum alloy 7075 having two thermo-mechanical treatments.

scholarly journals Effect of pH on Stress Corrosion Cracking of 6082 Al Alloy

Metals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 578 ◽  
Author(s):  
C. Panagopoulos ◽  
Emmanuel Georgiou ◽  
K. Giannakopoulos ◽  
P. Orfanos
Keyword(s):  
Aluminum Alloy ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Al Alloy ◽  
Cracking Behavior ◽  
Effect Of Ph ◽  
Cracking Mechanisms ◽  
6082 Aluminum Alloy ◽  
6082 Al Alloy

In this work, the effect of pH (3, 7 and 10) on the stress corrosion cracking behavior of 6082 aluminum alloy, in a 0.3 M sodium chloride (NaCl) aqueous based solution was investigated. The stress corrosion cracking behavior was studied with slow strain rate testing, whereas failure analysis of the fractured surfaces was used to identify the dominant degradation mechanisms. The experimental results clearly indicated that stress corrosion cracking behavior of this aluminum alloy strongly depends on the pH of the solution. In particular, the highest drop in ultimate tensile strength and ductility was observed for the alkaline pH, followed by the acidic, whereas the lowest susceptibility was observed in the neutral pH environment. This observation is attributed to a change in the dominant stress corrosion cracking mechanisms.

Stress Corrosion Cracking Behaviour of Flux Bounded TIG Welded AA2219 T87 Aluminum Alloy in 3.5 Weight Percent NaCl Solution

2015 ◽  
Vol 766-767 ◽  
pp. 733-738
Author(s):  
A.V. Santhana Babu ◽  
P.K. Giridharan ◽  
A. Venugopal ◽  
P. Ramesh Narayanan ◽  
S.V.S. Narayana Murty
Keyword(s):  
Aluminum Alloy ◽  
Strain Rate ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Weight Percent ◽  
Corrosion Cracking ◽  
Slow Strain Rate Test ◽  
Nacl Solution ◽  
Test Technique ◽  
Rate Test

Limitation in penetration depth is a concern in conventional TIG welding. To improve penetration capability of TIG process, Flux Bounded TIG (FBTIG) has been developed. Stress corrosion cracking (SCC) behavior of FBTIG welds of aluminum alloy AA 2219 T87 is evaluated in 3.5 weight percent NaCl solution using Slow Strain Rate Test technique (SSRT) as per ASTM G129. SCC index defined as the ratio of the elongation of tensile tested specimen in NaCl to that of air is taken as a measure of the susceptibility to cracking. Based on the SCC index, it is concluded that the SCC resistance of FBTIG joints are good and comparable to that of conventional TIG welds.

Sign in / Sign up

Export Citation Format

Share Document