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- Aluminium-lithium_alloy abstract "Aluminium–lithium alloys (Al-Li) are a series of alloys of aluminium and lithium, often also including copper and zirconium. Since lithium is the least dense elemental metal these alloys are significantly less dense than aluminium. Commercial Al–Li alloys contain up to 2.45% by weight of lithium.Alloying with lithium reduces structural mass by three effects:Displacement—a lithium atom is lighter than an aluminium atom; each lithium atom then displaces one aluminium atom from the crystal lattice while maintaining the lattice structure. Every 1% by weight of lithium added to aluminium reduces the density of the resulting alloy by 3% and increases the stiffness by 5%. This effect works up to the solubility limit of lithium in aluminium, which is 4.2%.Strain hardening—Introducing another type of atom into the crystal strains the lattice, which helps block dislocations. The resulting material is thus stronger, which allows less of it to be used.Precipitation hardening—When properly aged, lithium forms a metastable Al3Li phase (δ') with a coherent crystal structure. These precipitates strengthen the metal by impeding dislocation motion during deformation. The precipitates are not stable however and care must be taken to prevent overaging with the formation of the stable AlLi (β) phase. This also produces precipitate free zones (PFZs) typically at grain boundaries and can reduce the corrosion resistance of the alloy.The crystal structure for Al3Li and Al–Li, while based on the FCC crystal system, are very different. Al3Li shows almost the same size lattice structure as pure aluminum except lithium atoms are present in the corners of the unit cell. The Al3Li structure is known as the AuCu3, L12, or Pm3m and has a lattice parameter of 4.01 Å. The Al–Li structure is known as the NaTl, B32, or Fd3m structure which is made of both lithium and aluminum assuming diamond structures and has a lattice parameter of 6.37 Å. The interatomic spacing for AlLi (3.19 Å) is smaller than either pure lithium or aluminum.Al–Li alloys are primarily of interest to the aerospace industry due to the weight advantage they provide. They are currently used in a few commercial jetliner airframes, the fuel and oxidizer tanks in the SpaceX Falcon 9 launch vehicle, and the AgustaWestland EH101 helicopter.The third and final version of the US Space Shuttle's external tank was principally made of Al–Li. In addition, Al–Li alloys are also used on both the Atlas V and Delta IV EELV rockets, and before its cancellation were to be used by NASA for Constellation program, primarily, on its Ares I and Ares V rockets, as well as the Orion spacecraft.Al-Li alloys are generally joined by friction stir welding. Some Al–Li alloys, such as Weldalite 049, can be welded conventionally; however, this property comes at the price of density; Weldalite 049 has about the same density as 2024 aluminium and 5% higher elastic modulus.Key world producers of Aluminium-lithium alloy products are Alcoa, Constellium, Kamensk-Uralsky Metallurgical Works.".
- Aluminium-lithium_alloy wikiPageExternalLink b32.html.
- Aluminium-lithium_alloy wikiPageExternalLink l1_2.html.
- Aluminium-lithium_alloy wikiPageID "7202520".
- Aluminium-lithium_alloy wikiPageLength "5164".
- Aluminium-lithium_alloy wikiPageOutDegree "40".
- Aluminium-lithium_alloy wikiPageRevisionID "680362324".
- Aluminium-lithium_alloy wikiPageWikiLink Aerospace.
- Aluminium-lithium_alloy wikiPageWikiLink AgustaWestland_AW101.
- Aluminium-lithium_alloy wikiPageWikiLink AgustaWestland_EH101.
- Aluminium-lithium_alloy wikiPageWikiLink Airframe.
- Aluminium-lithium_alloy wikiPageWikiLink Alcoa.
- Aluminium-lithium_alloy wikiPageWikiLink Alloy.
- Aluminium-lithium_alloy wikiPageWikiLink Alloys.
- Aluminium-lithium_alloy wikiPageWikiLink Aluminium.
- Aluminium-lithium_alloy wikiPageWikiLink Aluminium_alloy.
- Aluminium-lithium_alloy wikiPageWikiLink Ares_I.
- Aluminium-lithium_alloy wikiPageWikiLink Ares_V.
- Aluminium-lithium_alloy wikiPageWikiLink Atlas_V.
- Aluminium-lithium_alloy wikiPageWikiLink Category:Aluminium_alloys.
- Aluminium-lithium_alloy wikiPageWikiLink Chemical_element.
- Aluminium-lithium_alloy wikiPageWikiLink Constellation_program.
- Aluminium-lithium_alloy wikiPageWikiLink Constellium.
- Aluminium-lithium_alloy wikiPageWikiLink Corrosion.
- Aluminium-lithium_alloy wikiPageWikiLink Corrosion_resistance.
- Aluminium-lithium_alloy wikiPageWikiLink Crystal_lattice.
- Aluminium-lithium_alloy wikiPageWikiLink Crystal_structure.
- Aluminium-lithium_alloy wikiPageWikiLink Cubic_crystal_system.
- Aluminium-lithium_alloy wikiPageWikiLink Delta_IV.
- Aluminium-lithium_alloy wikiPageWikiLink Delta_IV_rocket.
- Aluminium-lithium_alloy wikiPageWikiLink Density.
- Aluminium-lithium_alloy wikiPageWikiLink Dislocation.
- Aluminium-lithium_alloy wikiPageWikiLink Dislocations.
- Aluminium-lithium_alloy wikiPageWikiLink Elastic_modulus.
- Aluminium-lithium_alloy wikiPageWikiLink Evolved_Expendable_Launch_Vehicle.
- Aluminium-lithium_alloy wikiPageWikiLink Falcon_9.
- Aluminium-lithium_alloy wikiPageWikiLink Friction_stir_welding.
- Aluminium-lithium_alloy wikiPageWikiLink Grain_boundaries.
- Aluminium-lithium_alloy wikiPageWikiLink Grain_boundary.
- Aluminium-lithium_alloy wikiPageWikiLink Helicopter.
- Aluminium-lithium_alloy wikiPageWikiLink Jet_airliner.
- Aluminium-lithium_alloy wikiPageWikiLink Kamensk-Uralsky_Metallurgical_Works.
- Aluminium-lithium_alloy wikiPageWikiLink Lattice_constant.
- Aluminium-lithium_alloy wikiPageWikiLink Lattice_parameter.
- Aluminium-lithium_alloy wikiPageWikiLink Lithium.
- Aluminium-lithium_alloy wikiPageWikiLink Magnesium_alloy.
- Aluminium-lithium_alloy wikiPageWikiLink Orion_(spacecraft).
- Aluminium-lithium_alloy wikiPageWikiLink Orion_spacecraft.
- Aluminium-lithium_alloy wikiPageWikiLink Precipitation_hardening.
- Aluminium-lithium_alloy wikiPageWikiLink Solubility.
- Aluminium-lithium_alloy wikiPageWikiLink SpaceX.
- Aluminium-lithium_alloy wikiPageWikiLink Space_Shuttle.
- Aluminium-lithium_alloy wikiPageWikiLink Space_Shuttle_external_tank.
- Aluminium-lithium_alloy wikiPageWikiLink Stiffness.
- Aluminium-lithium_alloy wikiPageWikiLink Strain_hardening.
- Aluminium-lithium_alloy wikiPageWikiLink Work_hardening.
- Aluminium-lithium_alloy wikiPageWikiLink Zirconium.
- Aluminium-lithium_alloy wikiPageWikiLinkText "Al-Li alloy".
- Aluminium-lithium_alloy wikiPageWikiLinkText "Aluminium-lithium alloy".
- Aluminium-lithium_alloy wikiPageWikiLinkText "Aluminum Lithium alloy".
- Aluminium-lithium_alloy wikiPageWikiLinkText "aluminium-lithium alloy".
- Aluminium-lithium_alloy wikiPageWikiLinkText "aluminium-lithium".
- Aluminium-lithium_alloy wikiPageWikiLinkText "aluminum lithium".
- Aluminium-lithium_alloy wikiPageWikiLinkText "aluminum-lithium alloy".
- Aluminium-lithium_alloy hasPhotoCollection Aluminium-lithium_alloy.
- Aluminium-lithium_alloy wikiPageUsesTemplate Template:Citation_needed.
- Aluminium-lithium_alloy wikiPageUsesTemplate Template:Cn.
- Aluminium-lithium_alloy wikiPageUsesTemplate Template:Overbar.
- Aluminium-lithium_alloy wikiPageUsesTemplate Template:Reflist.
- Aluminium-lithium_alloy wikiPageUsesTemplate Template:Use_dmy_dates.
- Aluminium-lithium_alloy subject Category:Aluminium_alloys.
- Aluminium-lithium_alloy hypernym Series.
- Aluminium-lithium_alloy type TelevisionShow.
- Aluminium-lithium_alloy comment "Aluminium–lithium alloys (Al-Li) are a series of alloys of aluminium and lithium, often also including copper and zirconium. Since lithium is the least dense elemental metal these alloys are significantly less dense than aluminium.".
- Aluminium-lithium_alloy label "Aluminium-lithium alloy".
- Aluminium-lithium_alloy sameAs Aluminium-Lithium-Legierung.
- Aluminium-lithium_alloy sameAs Al-Li.
- Aluminium-lithium_alloy sameAs m.025vzz9.
- Aluminium-lithium_alloy sameAs அலுமினியம்-இலித்தியம்_கலப்புலோகம்.
- Aluminium-lithium_alloy sameAs Al-Li.
- Aluminium-lithium_alloy sameAs Q447440.
- Aluminium-lithium_alloy sameAs Q447440.
- Aluminium-lithium_alloy wasDerivedFrom Aluminium-lithium_alloy?oldid=680362324.
- Aluminium-lithium_alloy isPrimaryTopicOf Aluminium-lithium_alloy.