The Effect of Loading Orientation on the Stress Corrosion Cracking of Al-Mg Alloys

McMahon, M. E.; Steiner, Patrick; Lass, Amber B.; Burns, James T.

doi:10.5006/2343

Cited by 27 publications

(4 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The acidification of the crack tip that occurs through the metal cation hydrolysis reactions increases the hydrogen overpotential at the crack tip which, in turn, enables local hydrogen adsorption and diffusion into the fracture process zone, where the hydrogen promotes decohesion of the grain boundary and/or at the interface of the intergranular β particle and the matrix. This mechanism has been recently supported through experimental work in a variety of saline environments and alloy sensitisation conditions [17,25,26,28,32,33] and has been theoretically supported through hydrogen-enhanced decohesion modelling [17,25,26].…”

Section: Introductionmentioning

confidence: 89%

“…Sensitisation of Al-Mg alloys in naval service has proved difficult to avoid, and IG-SCC of marine structures, where residual stress levels can be high, is increasingly common [3,23]. Numerous research efforts have confirmed that a coupled anodic dissolution (of the β/α-Al matrix) and hydrogen embrittlement mechanism drives IG-SCC [5,13,14,16,17,[24][25][26][27][28]. Specifically, localised anodic β phase dissolution at the crack-tip provides Al 3+ and Mg 2+ cations in the local crack-tip chemistry that (1) promote metal cation hydrolysis reactions to form hydrogen, (2) drive Cl − ingress for charge neutralisation, which in turn (3) affects the complex oxide at the crack tip to enable further α-Al matrix dissolution [24,[29][30][31].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The influence of Zn²⁺ on stress corrosion cracking severity in a highly sensitised Al–Mg alloy

McMahon

Burns

Scully

2020

Corrosion Engineering, Science and Technology

View full text Add to dashboard Cite

Recent work has indicated that a galvanic as well as chemical protection mechanism may control the intergranular stress corrosioncracking (IG-SCC) mitigation achieved by Zn-rich primers on Al-Mg alloys [1]. The effect of Zn salt species content added to the bulk NaCl environment on IG-SCC severity at -0.9 VSCE was evaluated using a highly susceptible condition of AA5456-H116. Linear elastic fracture mechanics-based testing demonstrated that, for a constant [Cl -], the threshold stress intensity for IG-SCC increased under these conditions and the IG-SCC growth rate was significantly suppressed with increasing stress intensity in the presence of Zn ions. Titration of ZnCl 2 into Al-Mg simulated crack tip solution indicates that Zn salt species may reduce crack tip acidification and thereby raise the pH of the crack tip. These results support the combined galvanic and chemical protection that may be achieved through use of Zn-rich primers for IG-SCC mitigation on AA5456-H116.

show abstract

Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

The influence of Zn²⁺ on stress corrosion cracking severity in a highly sensitised Al–Mg alloy

McMahon

Burns

Scully

2020

Corrosion Engineering, Science and Technology

View full text Add to dashboard Cite

show abstract

“…Aluminum alloys are used for a wide range of applications in various industries (Cayless, 1990;Hosford & Duncan, 1994;McMahon et al, 2017). The unique combinations of properties provided one of the most versatile applications, from the automotive industry (Gong et al, 2019) through the aerospace industry to beverage packaging (Kaufman, 2000).…”

Section: Introductionmentioning

confidence: 99%

The influence of aging on buckle strength loss in AA5182-H48 for beverage can ends

Kokoszka,

Milenin

2023

cmms

View full text Add to dashboard Cite

The paper examines the influence of aging on buckling strength loss for aluminum alloy 5182 beverage can ends. In the experimental study, aging took place naturally and artificially. For the buckling strength testing, a special experimental technique was used, which was based on measuring the internal pressure leading to the destruction of the beverage can ends. The experimental results show that the beverage can ends indicate a significant time-dependent buckle strength loss. For example, a year of aging can end at 20°C leading to a decrease in its strength by 5%. Half of this decrease occurs in the first 3-4 weeks. The aging phenomenon also got worse with increasing temperature. It has been found that increasing the aging temperature to 40°C results in an 8% reduction in buckling strength after 4 weeks of aging. The whole life cycle, from its production to the processes it undergoes and storage time, was analyzed. At the same time, tests were carried out for both the input material and the product itself. On this basis, the mechanical properties and their change depending on time or temperature were examined. All specimens made from can end stock (CES) were also found to not show the same drop of mechanical properties as for the buckling of finished ends. The obtained experimental allowed the development of an empirical mathematical model that makes it possible to predict the buckling strength of the can end depending on the conditions of aging and temperature of testing. The present study showed the importance of temperature conditions used in can filling lines in the determination of resistance to changes in buckling for the ends.

show abstract

“…different loading rates, holds, etc.). This set-up has been successfully applied to characterize the environmental cracking susceptibility of steel [31]; Al- [32]- [34]; Ti- [35], [36]; and Ni-based [4], [37], [38] alloys for a wide range of mechanical and environmental conditions. Such data is critical to inform LEFM-based component life management tools (e.g.…”

Section: Introductionmentioning

confidence: 99%

Loading Rate Effects on the Hydrogen Enhanced Cracking Behavior of Ni- and Co-based Superalloys for Marine Applications

Popernack¹

View full text Add to dashboard Cite

Marine fastener alloys can be susceptible to hydrogen environmentally assisted cracking (HEAC) in cathodically polarized seawater environments [1]- [3]. Understanding the controlling mechanisms of HEAC is critical to developing accurate predictive models for structural management of these material systems. Prior work has demonstrated that there is a potentially strong influence of loading rate on the HEAC susceptibility in environments pertinent to engineering applications [4]. The current work uses linear elastic fracture mechanics (LEFM) based testing to characterize the stress intensity rate (dK/dt) dependence of HEAC behavior for Monel K-500 (Ni-based superalloy) and MP98t (Co-based superalloy) in cathodically polarized solutions. This work has been divided into three tasks to rigorously analyze the material behavior.

show abstract

The Effect of Loading Orientation on the Stress Corrosion Cracking of Al-Mg Alloys

Cited by 27 publications

References 50 publications

The influence of Zn²⁺ on stress corrosion cracking severity in a highly sensitised Al–Mg alloy

The influence of Zn²⁺ on stress corrosion cracking severity in a highly sensitised Al–Mg alloy

The influence of aging on buckle strength loss in AA5182-H48 for beverage can ends

Loading Rate Effects on the Hydrogen Enhanced Cracking Behavior of Ni- and Co-based Superalloys for Marine Applications

Contact Info

Product

Resources

About

The Effect of Loading Orientation on the Stress Corrosion Cracking of Al-Mg Alloys

Cited by 27 publications

References 50 publications

The influence of Zn2+ on stress corrosion cracking severity in a highly sensitised Al–Mg alloy

The influence of Zn2+ on stress corrosion cracking severity in a highly sensitised Al–Mg alloy

The influence of aging on buckle strength loss in AA5182-H48 for beverage can ends

Loading Rate Effects on the Hydrogen Enhanced Cracking Behavior of Ni- and Co-based Superalloys for Marine Applications

Contact Info

Product

Resources

About

The influence of Zn²⁺ on stress corrosion cracking severity in a highly sensitised Al–Mg alloy

The influence of Zn²⁺ on stress corrosion cracking severity in a highly sensitised Al–Mg alloy