THE influence of copper addition on crack initiation and propagation in an Al–Si–Mg alloy during cyclic testing

Bogdanoff, Toni; Lattanzi, Lucia; Merlin, Mattia; Ghassemali, Ehsan; Seifeddine, Salem

doi:10.1016/j.mtla.2020.100787

Cited by 12 publications

(9 citation statements)

References 15 publications

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“…The previous experiment shows that the strength and plasticity of aluminum alloy are the main factors influencing the fatigue crack propagation [46]. The impact of adding copper on the initiation and propagation of cracks is studied through in situ cyclic testing in the as-cast state, and the findings reveal that the presence of Cu-rich intermetallic compounds does not influence the fatigue characteristics and the strain accumulation is most prominent at the grain boundaries [48]. Additionally, it is evident that material strength does not show a significant correlation with corrosion width.…”

Section: Corrosion Widthmentioning

confidence: 98%

“…The evolution of crack tip propagation area during plastic deformation plays a key role in understanding future service life. Therefore, future research will concentrate on identifying the root cause of stress corrosion mechanisms in corrosive materials through structural evolution [46][47][48]. The previous experiment shows that the strength and plasticity of aluminum alloy are the main factors influencing the fatigue crack propagation [46].…”

Section: Corrosion Widthmentioning

confidence: 99%

Section: Corrosion Widthmentioning

confidence: 99%

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Revealing Crack Propagation and Mechanical Behavior of Corroded Aluminum Alloys

Zhang,

Wang,

Fang

et al. 2024

Symmetry

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The mechanical properties and crack propagation behavior of aluminum alloys, both with and without corroded surfaces, were thoroughly investigated through molecular dynamic (MD) simulations. The study delved into the effects of corrosion depth and width on the mechanical properties of corroded aluminum alloys. It was found that as the corrosion depth increases, the yield strength experiences an initial decrease followed by a subsequent increase. This can be attributed to the impact of increased corrosion depth on the healing of surface roughness, which ultimately leads to significant changes in yield strength. Furthermore, the presence of corrosion pits was identified as a key factor in regulating the local microstructure evolution within the material, leading to pronounced differences in stress distribution localization. This, in turn, influenced the path of crack propagation within the material. These findings not only contribute to a deeper understanding of the behavior of aluminum alloys under corrosion, but also provide valuable insights for the development of aluminum alloys with enhanced mechanical properties.

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Section: Corrosion Widthmentioning

confidence: 98%

Section: Corrosion Widthmentioning

confidence: 99%

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Revealing Crack Propagation and Mechanical Behavior of Corroded Aluminum Alloys

Zhang,

Wang,

Fang

et al. 2024

Symmetry

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“…The strain value has a decreasing trend. As a result, adding copper makes the alloy robust and ductile [21][22][23]. Zinc can change the mechanical characteristics of aluminium alloys.…”

Section: Introductionmentioning

confidence: 99%

Comparative Assessment of Magnesium, Copper, and Zinc Addition to Aluminium Waste Casting for Improving Ship Material Behaviour

Kiryanto,

Tuswan,

Samuel

et al. 2024

TransNav

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The aluminium industry for ship materials produces waste material that can pollute the environment. To protect the environment from material pollution, the aluminium waste recycling process can be used to develop ship material. This study aims to analyze the physical and mechanical characteristics of aluminium with magnesium, copper, and zinc addition. Several tests, such as chemical composition, tensile, and impact tests, will be conducted to ascertain the mechanical properties of aluminium alloy. Adding alloy material in the range of 0-10% resulted in various alloy element compositions. It can be analyzed that the aluminium contents decreased with the increase of alloy elements. The highest rise in alloy elements can be found in the addition of magnesium than in copper and zinc addition. Moreover, the mechanical tests showed that aluminium casting with magnesium, copper, and zinc additions influenced the mechanical properties of the aluminium alloy. It can be found that tensile strength and modulus of elasticity values improved with the increase of alloy addition. The addition of magnesium has better tensile properties than the addition of copper and zinc. In contrast, the impact resistance decreased with the addition of magnesium, making the alloy more brittle.

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“…Lados and Apelian [ 17 ] investigated the influence of grain size and Al–Si eutectic phase secondary dendrite arm spacing on crack propagation in cast Al–Si–Mg alloys. The effects of various alloying elements on the cracking behavior of Al–Si–Mg alloys, such as Mg [ 18 ] and Cu [ 19 ], were also analyzed. These studies, however, only focused on the relationship between micrometer-scale cracks and phases.…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Study on Crack Propagation in Al Containing Mg–Si Clusters Formed during Natural Aging

2023

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The crack propagation behavior of Al containing Mg–Si clusters is investigated using molecular dynamics (MD) simulations to demonstrate the relationship between the natural aging time in Al–Si–Mg alloys and ductility. Experimental results show that the elongation at failure decreases with natural aging. There are few studies on the relationship between natural aging and ductility because of the difficult observation of Mg–Si clusters. To solve the difficulty, cracked Al containing Mg–Si clusters of varying sizes are assumed for the MD simulations. A larger Mg–Si cluster in Al results in earlier crack opening and dislocation emission. Moreover, as the Mg–Si cluster size increases, the stress near the crack tip becomes more concentrated. This causes rapid crack propagation, a similar effect to that of crack tip sharpening. As a result of long-term natural aging, the cracks expand rapidly. The influence of geometry is also investigated. Crack lengthening and thickness reduction negatively impact the fracture toughness, with the former having a larger impact than the latter. Although there are several discrepancies in the practical deformation conditions, the simulation results can help to more thoroughly understand natural aging in Al–Si–Mg alloys.

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THE influence of copper addition on crack initiation and propagation in an Al–Si–Mg alloy during cyclic testing

Cited by 12 publications

References 15 publications

Revealing Crack Propagation and Mechanical Behavior of Corroded Aluminum Alloys

Revealing Crack Propagation and Mechanical Behavior of Corroded Aluminum Alloys

Comparative Assessment of Magnesium, Copper, and Zinc Addition to Aluminium Waste Casting for Improving Ship Material Behaviour

Molecular Dynamics Study on Crack Propagation in Al Containing Mg–Si Clusters Formed during Natural Aging

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