Electron-beam weld microstructures and properties of aluminium-lithium alloy 8090

Ravindra, A.; Dwarakadasa, E. S.; Srivatsan, T. S.; Ramanath, C.; Iyengar, K. V. V.

doi:10.1007/bf00354233

Cited by 17 publications

(4 citation statements)

References 16 publications

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“…With superior properties such as decreased density, increased elastic modulus, as well as appreciable improvement of specific strength and stiffness, aluminum-lithium (Al-Li) alloys have been considered as desirable substitutes for traditional 2xxx and 7xxx series high-strength Al alloys and considerable efforts have been made toward the development of this family [1][2][3][4]. As a novel damage-tolerant Al-Li alloy newly developed in China, 2A97 Al-Li alloy possesses excellent fracture toughness and malleability besides the merits of conventional Al-Li alloys, and has a broad application prospect in aerospace, aviation and armament industries.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of newly developed aluminum–lithium alloy 2A97 welded by fiber laser

Qin

Meng

et al. 2014

Materials Science and Engineering: A

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Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of newly developed aluminum–lithium alloy 2A97 welded by fiber laser

Qin

Meng

et al. 2014

Materials Science and Engineering: A

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“…Hot cracking in the weld metal occurs due to the formation of a eutectic mixture with low melting point. The observed decrease of mechanical properties of the weld metal was due to the welding temperature cycle [6].…”

Section: Introductionmentioning

confidence: 92%

Electron Beam Welding of 2099-T83 Aluminium-lithium Alloy Thick Plates

et al. 2019

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The paper deals with the welding of AW 2099-T83 aluminium lithium alloy being used for construction of lower wing stringers. The thickness of AW 2099-T83 aluminium lithium alloy was 25.4 mm. Electron beam welding with the accelerating voltage of 55 kV was used for production of welded joints. Welded joints were inspected by computer tomography, macroscopic and microscopic analysis, tensile strength test and microhardness measurement. Welded joints exhibited good weld joint formation, typical to electron beam welding. Weld metal was structure was dendritic formed by α solid solution. Decrease of microhardness was observed mainly in the centre of weld metal due to dissolution of precipitates. The fracture occurred in the weld metal during tensile strength test. Further research will focus on post-heat treatment of welded joints in order to improve mechanical properties of weld metal.

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“…On the other hand, the contact angle of epoxy is difficult to measure due to its high viscosity and poor mobility [26][27][28]. The addition of lithium into aluminum improve modulus and decrease density even before compared to conventional aluminum alloys, lithium-containing aluminum alloys 8090 are of significant current interest in the aerospace and aircraft industries [29,30]. Few commercial aluminum-lithium alloys before 8090 have emerged for use in the aerospace industry [31].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the multiple plies structure of aluminum-lithium alloy and glass fiber composite with respect to deformation failure

Qutaba

Asmelash

Azhari

2023

Mater. Res. Express

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: The deformation behavior and mechanical properties based on the aluminum-lithium alloys (FMLs) was investigated to optimize the manufacturing process and further interface interaction. The primary structures of the FML composites were made with two sets of plies. From there, six secondary composites with different fibre sheet orientations were made. Then, interlaminar tensile, flexural, and peeling properties of FMLs were tested. The fiber orientation role in the case of failure behaviors of FMLs under different conditions was also revealed. The results have indicated that the plies design significantly enhanced the interlaminar properties of the FMLs and orientation of fiber laying has significantly affected the flexural strength. The peeling test has shown higher fiber-to-metal interfacial bonding with the value of ≥ 80 N/m2 over metal-to-metal adhesion. The plies increase the mechanical properties of composite based at fiber orientation and thickness, but too much impairs performance. The 3/2 plies showed a value of ≤ 385 MPa which has better results in axial structure analysis as compared to over 4/2 composite layers. The peak values appeared under different parameters like adhesive bonding and parallel fiber orientation represented in the qualitative analysis section. The surface microscopy of aluminum-lithium alloy sheet and cross-section failure morphology of composite has been done at a different sighting. Surface characterization, fiber orientation breakdown and deformation morphology have been studied with respect to alloys' elongated grains and micro pits.

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Electron-beam weld microstructures and properties of aluminium-lithium alloy 8090

Cited by 17 publications

References 16 publications

Microstructure and mechanical properties of newly developed aluminum–lithium alloy 2A97 welded by fiber laser

Microstructure and mechanical properties of newly developed aluminum–lithium alloy 2A97 welded by fiber laser

Electron Beam Welding of 2099-T83 Aluminium-lithium Alloy Thick Plates

Investigation on the multiple plies structure of aluminum-lithium alloy and glass fiber composite with respect to deformation failure

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