Journal ArticleDOI
Recent developments in the weldability of lithium-containing aluminium alloys
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The weldability of aluminium-lithium alloys is reviewed with emphasis on alloys that are being commercialized: 2090, 8090 and Weldalite™ 049 as mentioned in this paper.Abstract:
The weldability of aluminium-lithium alloys is reviewed with emphasis on alloys that are being commercialized: 2090, 8090 and Weldalite™ 049. These alloys are weldable, although hotcracking susceptibility has been reported for 2090 and 8090 when welded with certain conventional filler alloys. Mechanical property data from weldments made by several techniques are emphasized. Weld-zone porosity problems, discussed at length in a 1985 review in this journal, have largely been controlled by proper weld pretreatment and gas shielding. Interest in the weldability of aluminium-lithium alloys has taken on increased significance because of their potential to reduce the weight of space launch systems, whose fabrication most often involves welding.read more
Citations
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Progress in joining of advanced materials
Gürel Çam,Mustafa Koçak +1 more
TL;DR: In this article, diffusion bonding and laser welding are considered for joining a wide range of materials of interest in the aerospace industry, as well as in many other industrial applications, and offer remarkable advantages over conventional fusion welding processes.
Journal ArticleDOI
Recent developments in light alloys
TL;DR: In this article, the authors discuss recent developments in aluminium, magnesium and titanium alloys, focusing on new ageing practices, lithium-containing aluminium alloys and the role of trace elements in controlling precipitation.
Journal ArticleDOI
Mechanical and thermodynamic properties of Al3Sc and Al3Li precipitates in Al-Li-Sc alloys from first-principles calculations
TL;DR: In this article, the mechanical, electronic and thermodynamic properties of L12-type Al3Sc and Al3Li precipitates have been investigated from first-principles method and calculated equilibrium parameters such as lattice constants are in good agreement with the available experimental results and other theoretical reports.
Journal ArticleDOI
Mechanical behaviour of aluminium-lithium alloys
TL;DR: In this article, the authors summarise the work pertaining to study of structure and mechanical properties with a view to indicate the directions that have been and can be pursued to overcome property limitations.
Journal ArticleDOI
Weldability of Li-bearing aluminium alloys
A. Kostrivas,J.C. Lippold +1 more
TL;DR: Lithium bearing aluminium alloys constitute a relatively new generation of high performance, lightweight aviation alloys that are being considered for a variety of applications requiring welded conformance.
References
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Journal ArticleDOI
Addition rules and the contribution of δ' precipitates to strengthening of aged AlLiCu alloys
J.C. Huang,Alan J. Ardell +1 more
TL;DR: In this article, the authors investigated the room temperature yield strength of two alloys, Al-2.30 wt% Li 2.90 Li-0.85 Cu 0.12 Zr (the 2-3 alloy) and Al 2.12Zr (3-1 alloy), as a function of aging time at 160 and 190°C.
Patent
Ultra high strength weldable aluminum-lithium alloys
TL;DR: A family of alloys based upon aluminum-copper-magnesium-silver alloys to which lithium has been added, within specified ranges, exhibits superior ambient- and elevated-temperature strength, superior ductility at ambient and elevated temperatures, extrudability, forgeability, weldability, and an unexpected natural aging response as discussed by the authors.
Journal ArticleDOI
The weldability of lithium-containing aluminium alloys
Abstract: Lithium-containing aluminium alloys have reduced density and increased elastic modulus compared with conventional aluminium alloys. Many such alloys are currently under development for aircraft applications, which usually involve mechanical fastening. Consequently, the weldability of lithium-containing aluminium alloys is currently receiving relatively little attention. The weldability of lithium-containing aluminium alloys is reviewed. The vast majority of the welding studies performed have been on the Soviet Al-5 wt% Mg-2 wt% Li alloy, 01420. Alloy 01420 and other lithium-containing aluminium alloys are indeed fusion weldable, and weldments having high joint efficiencies have been made.
Journal ArticleDOI
The Weldability of an Al-Li-Cu Alloy
TL;DR: In this article, the potential fusion weldability of Alloy 2090 (Al-2.2 Li 2.7 Cu-0.12 Zr) was evaluated using gas metal arc, gas tungsten arc and electron beam (EB) welding processes.
Welding metallurgy and weldability of high strength aluminum alloys
TL;DR: In this article, a literature survey was conducted to gather the information available on the welding metallurgy of high strength aluminum alloys, and its effect on their weldability, focusing on fusion welding.