High-throughput computing for screening the potential alloying elements of a 7xxx aluminum alloy for increasing the alloy resistance to stress corrosion cracking

Abstract The resistance to stress corrosion cracking of AISI 4340 steel foil in 0.6M aqueous sodium chloride, acidified to pH 1.5 with hydrochloric acid, is greatly decreased by prior treatment of the specimens for short periods of time with aqueous and nonaqueous solutions of sulfur, organic and inorganic sulfides, sulfur dioxides, and the inorganic salts of sulfurousand sulfuric acids. It is suggested that this prior treatment produces sulfided areas which are inhibitors of the combination of atomic hydrogen into molecular hydrogen. The decreased resistance to stress corrosion cracking is thus attributed to hydrogen embrittlement. If the stress corrosion cracking test is made in 0.6M aqueous sodium chloride, adjusted to an initial pH of 8, the effect of a prior sulfiding treatment is small. The formation of such sulfided areas in practice result from the exposure of 4340 steels to industrial atmospheres which may contain hydrogen sulfide, sulfur dioxide, and elemental sulfur.

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Failure analysis showing the effect of sulphur content in stainless steel on the resistance to stress corrosion cracking in marine environments at ambient temperatures

International Journal of Forensic Engineering ◽

10.1504/ijfe.2014.066305 ◽

2014 ◽

Vol 2 (2) ◽

pp. 87

Author(s):

Paul Roffey

Keyword(s):

Stainless Steel ◽

Failure Analysis ◽

Stress Corrosion ◽

Stress Corrosion Cracking ◽

Corrosion Cracking ◽

Sulphur Content ◽

Marine Environments ◽

Ambient Temperatures ◽

Resistance To Stress

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The resistance to stress corrosion cracking of some Cr–Ni–Fe austenitic steels and alloys

British Corrosion Journal ◽

10.1179/000705965798328065 ◽

1965 ◽

Vol 1 (2) ◽

pp. 60-66 ◽

Cited By ~ 25

Author(s):

J. E. Truman ◽

R. Perry

Keyword(s):

Stress Corrosion ◽

Stress Corrosion Cracking ◽

Corrosion Cracking ◽

Austenitic Steels ◽

Resistance To Stress

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Effect of pH on Stress Corrosion Cracking of 6082 Al Alloy

Metals ◽

10.3390/met8080578 ◽

2018 ◽

Vol 8 (8) ◽

pp. 578 ◽

Cited By ~ 4

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.

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

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.766-767.733 ◽

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.

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