摘要:
The invention relates to an aluminium alloy wrought product for structural members having a chemical composition consisting of, in wt.%: Cu 3.2% to 4.4%, Li 0.8% to 1.4%, Mg 0.20% to 0.90%, Mn 0.10% to 0.8%, Zn 0.20% to 0.80%, one or more elements selected from the group consisting of: (Zr 0.05% to 0.25%, Cr 0.05% to 0.30%, Ti 0.01% to 0.25%, Sc 0.05% to 0.4%, Hf 0.05% to 0.4%), Ag
摘要:
The present invention concerns an electrical connector comprising at least a contact element, said contact element being made of an alloy comprising aluminium, copper and at least one element selected from magnesium and zinc, said alloy having the following percentage composition by weight: - copper 1.5-7%, - magnesium 0.1-2.5 - zinc 0.1-2.5 - optionally silicon 0.1-2.5 - optionally manganese 0.1-2.5 - optionally tellurium 0.2-0.4 - aluminium balance to 100% Furthermore, the present invention concerns the use of said alloy as an electrical conductor.
摘要:
The invention relates to a metal sheet with a thickness of at least 80 mm made of an aluminium alloy including, as weight percentages: Cu: 2.0 - 6.0; Li: 0.5 - 2.0; Mg: 0 - 1.0; Ag: 0 - 0.7; Zn 0 - 1.0; and at least one element selected among Zr, Mn, Cr, Se, Hf and Ti, the amount of said element, if chosen, being 0.05 to 0.20 wt % for Zr, 0.05 to 0.8 wt % for Mn, 0.05 to 0.3 wt % for Cr and for Se, 0.05 to 0.5 wt % for Hf and 0.01 to 0.15 wt % for Ti, Si ≤ 0.1; Fe ≤ 0.1; others ≤ 0.05 each and ≤ 0.15 in total, characterised in that in the tempered state the logarithmic mean of the fatigue thereof, as measured at mid-thickness in the TL direction on smooth test pieces with a maximum amplitude constraint of 242 MPa, a frequency of 50 Hz and a stress ratio of R = 0.1, is at least 250,000 cycles. The product according to the invention is obtained by a method which, in particular, has specific casting conditions. The use of a metal sheet according to an invention is advantageous for manufacturing an aeroplane structural element, preferably a spar, ribs or a frame.
摘要:
New Al-Li alloy bodies and methods of producing the same are disclosed. The new Al-Li alloy bodies may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new Al-Li alloy bodies may realize improved strength and other properties.
摘要:
An aluminium-copper alloy comprising substantially insoluble particles which occupy the interdendritic regions of the alloy, provided with free titanium in quantity sufficient to result in a refinement of the grain structure in the cast alloy.
摘要:
The present invention relates to an aluminium alloy product for structural members having a chemical composition comprising, in wt.%: Cu 3.4 to 5.0, Li 0.9 to 1.7, Mg about 0.2 to 0.8, Ag about 0.1 to 0.8, Mn about 0.1 to 0.9, Zn up to 1.5, and one or more elements selected from the group consisting of: (Zr about 0.05 to 0.3, Cr about 0.05 to 0.3, Ti about 0.03 to 0.3, Sc about 0.05 to 0.4, Hf about 0.05 to 0.4), Fe
摘要翻译:本发明涉及具有化学组成的结构件的铝合金产品,其重量百分比包括:Cu 3.4-5.0,Li 0.9-1.7,Mg约0.2-0.8,Ag约0.1-0.8,Mn约0.1-0.9 ,Zn最多为1.5,以及选自(Zr约0.05〜0.3,Cr约0.05〜0.3,Ti约0.03〜0.3,Sc约0.05〜0.4,Hf约0.05〜0.4)的一种或多种元素, Fe <0.15,Si <0.5,正常和不可避免的杂质,平衡铝。
摘要:
The invention relates to an aluminium-based alloy of an Al-Cu-Mg group and to a product which is made thereof and used for aerospace engineering. The inventive alloy exhibits high strength and ductility characteristics, crack resistance, lifetime and increased lighting resistance. Said alloy has the following chemical composition (in mass %): 3.8-5.5 copper, 0.3-1.6 Mn, 0.2-0.8 Mg, 0.5·10 -6 -0.07 titanium, 0.5·10 -6 -0.1 tellurium, at least one element from a group containing 0.2-1.0 silver, 0.5·10 -6 -0.05 nickel, 0.5·10 -6 -0.1 zinc, 0.05-03 zirconium, 0.05-0.3 chromium, 0.5·10 -6 -0.15 iron, 0.5·10 -6 -0.1 silicium, 0.1·10 -5 -2. 7·10 -5 , the rest being aluminium. The alloy in the form of sheets is used as construction material for a skin and body frame in aerospace engineering.
摘要:
In some embodiments of the present disclosure are directed towards aluminum alloy compositions, products, and methods of making the same. In some embodiments, an aluminum alloy composition comprises, in weight percent: from 2.75% to 3.25% Cu; from 2.4% to 2.9% Mg; from 5.4% to 5.9% Zn, the balance being aluminum, incidental elements and impurities. In some embodiments, the aluminum alloy composition comprises in weight percent: 5.5% to 6.0% Cu; from 1.4% to 1.9% Mg; and from 2.9% to 3.4% Zn, the balance being aluminum, incidental elements and impurities.
摘要:
A metal-nanostructure composite includes a nanostructure-metal matrix composite. The nanostructure-metal matrix composite includes a host metal and nanofiller dispersed in the grains of the metal. The nanofillers can include both one-dimensional nanostructures (e.g., nano-tubes, nano-rods, nano-pillars, etc.) and two-dimensional nanostructures (e.g., graphene, nano-foam, nano-mesh, etc.) to improve the radiation resistance and mechanical properties of the host metal. A method of manufacturing the metal-nanostructure composite includes obtaining carbon nanotubes (CNTs) and encapsulating the CNTs with metal particles. The method also includes consolidating the encapsulated CNTs and forming (e.g., via extrusion) the consolidated metal/CNTs to produce the metal-nanostructure composite.