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- W3036704751 abstract "The introduction of Al-Li based alloys into commercial applications has not occurred without some major difficulties in alloy development. Poor ductility and low fracture toughness in these alloys has hindered their use in structures where they must serve as integral load-carrying members. On the other hand, superior fatigue and stiffness properties of these alloys has provided great incentive to pursue further development. The reason for the low ductility and poor fracture toughness has been attributed to several possible mechanisms including: i) shear band formation due to planar slip., and ii) strain localization resulting from large grain boundary precipitates. The rather good fatigue crack propagation characteristics have been attributed to significant macroscopic out-of-plane crack growth. However, little work has aimed at understanding the micromechanisms of this out-of-plane crack growth during cyclic loading. In addition, the role of the numerous precipitates that can exist in these complex Al-Li-X alloys to the fatigue crack growth resistance has not been examined closely. In this research we have examined the microscopic evolution of fatigue deformation in two Al-Li-X alloys using in-situ fatigue experiments conducted within an intermediate voltage transmission electron microscope." @default.
- W3036704751 created "2020-06-25" @default.
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- W3036704751 date "1989-08-06" @default.
- W3036704751 modified "2023-09-27" @default.
- W3036704751 title "In situ fatigue of Al-Li-X alloys" @default.
- W3036704751 cites W1994621258 @default.
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- W3036704751 doi "https://doi.org/10.1017/s0424820100155098" @default.
- W3036704751 hasPublicationYear "1989" @default.
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