Effect of prolonged high-temperature exposure on the fatigue and fracture behavior of aluminum-lithium alloy 2090

Rao, K. T. Venkateswara; Ritchie, Robert O.

doi:10.1016/0025-5416(88)90235-2

Cited by 20 publications

(2 citation statements)

References 21 publications

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“…As a result, Al-Li alloy has a longer fatigue crack initiation life and, thus, a higher fatigue life owing to its internal structure. In addition, some other studies on the fatigue resistance of alloys [ 118 , 119 , 120 , 121 , 122 , 123 , 124 ] showed that the precipitation phase, grain size, aging degree, and heat treatment process all affect the fatigue resistance of the alloy to some extent. According to the above study, the addition of Li affects the grain size and microstructure of the alloy and the Li content affects the type of precipitated phase of Al-Zn-Mg-Cu alloy.…”

Section: Effect Of LI On Properties Of Al-zn-mg-cu Alloysmentioning

confidence: 99%

The Role of Lithium in the Aging Precipitation Process of Al-Zn-Mg-Cu Alloys and Its Effect on the Properties

et al. 2023

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It is well known that the development of lightweight alloys with improved comprehensive performance and application value are the future development directions for the ultra-high-strength 7xxx series Al-Zn-Mg-Cu alloys used in the aircraft field. As the lightest metal element in nature, lithium (Li) has outstanding advantages in reducing the density and increasing the elastic modulus in aluminum alloys, so Al-Zn-Mg-Cu alloys containing Li have gained widespread attention. Furthermore, since the Al-Zn-Mg-Cu alloy is usually strengthened by aging treatment, it is crucial to understand how Li addition affects its aging precipitation process. As such, in this article, the effects and mechanism of Li on the aging precipitation behavior and the impact of Li content on the aging precipitation phase of Al-Zn-Mg-Cu alloys are briefly reviewed, and the influence of Li on the service properties, including mechanical properties, wear resistance, and fatigue resistance, of Al-Zn-Mg-Cu alloys are explained. In addition, the corresponding development prospects and challenges of the Al-Zn-Mg-Cu-Li alloy are also proposed. This review is helpful to further understand the role of Li in Al-Zn-Mg-Cu alloys and provides a reference for the development of high-strength aluminum alloys containing Li with good comprehensive properties.

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Section: Effect Of LI On Properties Of Al-zn-mg-cu Alloysmentioning

confidence: 99%

The Role of Lithium in the Aging Precipitation Process of Al-Zn-Mg-Cu Alloys and Its Effect on the Properties

et al. 2023

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“…the resistance of the material to slow stable crack extension over and above that caused by the growth of the plastic zone. Crack deflection and/or branching were found to occur in a variety of materials during quasi-static fracture [7,8], fatigue crack growth [8][9][10][11][12][13][14] and stress corrosion cracking [15,16]. The crack branching and its effect on the initiation as well as propagation toughness in A1-Li alloys has been analyzed by Suresh and co-workers [7,17,18].…”

Section: Introductionmentioning

confidence: 99%

Effect of crack deflection and branching on the R-curve behaviour of an Al-Li alloy 2090 sheet

1993

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The methodology to predict the increase in crack growth resistance due to crack deflection and branching is described. These procedures are discussed with respect to an AI-Li alloy 2090 sheet in T6 condition, the R-curve tests on which revealed that the crack path in L T orientation was deflected and branched while it remained nominally straight in TL orientation. The resistance to slow stable crack extension in L-T orientation was found to be significantly higher as compared to that in T-L orientation. Such behaviour is rationalized in terms of crack deflection and branching. The observed variation in the crack path morphology and the resulting R-curves in L-T and T-L orientations can be understood in terms of the microstructural features of the alloy.

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The Effects of Prolonged Thermal Exposure on the Fracture and Fatigue Behavior of Aluminum-Lithium Alloy 8090

1993

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Effect of prolonged high-temperature exposure on the fatigue and fracture behavior of aluminum-lithium alloy 2090

Cited by 20 publications

References 21 publications

The Role of Lithium in the Aging Precipitation Process of Al-Zn-Mg-Cu Alloys and Its Effect on the Properties

The Role of Lithium in the Aging Precipitation Process of Al-Zn-Mg-Cu Alloys and Its Effect on the Properties

Effect of crack deflection and branching on the R-curve behaviour of an Al-Li alloy 2090 sheet

The Effects of Prolonged Thermal Exposure on the Fracture and Fatigue Behavior of Aluminum-Lithium Alloy 8090

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