摘要:
The invention relates to an extruded product made from an alloy of composition (% by weight): Cu: 5.05-5.35; Mg: 0.20-0.40; Mn: 0.20-0.40; Zr: 0.08-0.1; Ti: 0.01-0.15; Zn: 0-0.15; Si
摘要:
New 6xxx aluminum alloy sheet products and methods of making the same are disclosed. The new methods may include preparing a 6xxx aluminum alloy sheet product for solution heat treatment, solution heat treating and then quenching the 6xxx aluminum alloy sheet product, and then exposing the 6xxx aluminum alloy sheet product to a treatment temperature of from 30° C. to 60° C. for 0.2 to 300 seconds. After the exposing step, the 6xxx aluminum alloy sheet product may be coiled and then placed in an ambient environment. Due to the post-quench heating and subsequent exposure to ambient, a preselected amount of Newtonian cooling may be induced, thereby creating a unique and consistent microstructure within the 6xxx aluminum alloy sheet products.
摘要:
The present invention relates to an aluminum alloy, a method for producing a lightweight metal workpiece, a lightweight metal workpiece comprising the aluminum alloy, as well as the use of the aluminum alloy for producing high-strength lightweight metal workpieces by means of additive layer manufacturing (ALM) and/or spraying methods for load-optimized components, in particular in automobile manufacturing or in aviation and aerospace applications, plant engineering, medical technology, or as coating material for structural components.
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:
Provided is an aluminum alloy cast impeller for compressors that shows stable high-temperature strength at operating temperatures of about 200°C, and that has excellent productivity. The Al alloy cast impeller for compressors is configured to include a boss part, a plurality of blade parts, and a disc part. The Al alloy cast impeller for compressors is formed of an Al alloy cast that contains Cu: 1.4 to 3.2 mass% (hereinafter, "%"), Mg: 1.0 to 2.0%, Ni: 0.5 to 2.0%, Fe: 0.5 to 2.0%, and Ti: 0.01 to 0.35%. The boss part, the blade parts, and the disc part have secondary dendrite arm spacings of 20 to 50 µm, 10 to 35 µm, and 5 to 25 µm, respectively, and satisfy the relationship Amax > Bmax > Cmax, where Amax, Bmax, and Cmax are the maximum values of the secondary dendrite arm spacings of the boss part, the blade parts, and the disc part, respectively. The Al alloy cast impeller for compressors has a 0.2% proof stress value of 260 MPa or more at 200°C. A method for producing the aluminum alloy cast impeller for compressors is also disclosed.