The dispersoid phase Al_(20)Cu_2Mn_3 in a 2024 Al alloy is commonly composed of twins. An observation of corresponding high resolution image shows that the twin boundary plane is a glide plane other than mirror one.
The tensile strength and yield strengthof 2024 alloy can be improved with addition of CeO2,the optimum addition of CeO2 is 0.25% with the best mechanical properties,and the tensile strength and yield strength in the casting state are improved by 55% and 50%,respectively and that in the annealing state are improved by 30% and 17%,respectively.
Stress corrosion cracking behavior of SiC w/p-Al? SiC w/2024Al composite and 2024 alloy in 3.5%NaCl solution have been studied by using double-cantilever-beam method. The effect of whisker on stress corrosion cracking behavior of the composites was examined.
Microyield behavior of silicon carbide particles reinforced 2024 aluminum alloy (SiCp/2024Al composites) with three volume fractions of SiCp were investigated in this paper.
The plating or cementation of copper from solution as an electrochemical displacement reaction appears to be a major contributor to the pitting corrosion of 2024 aluminum alloy.
Microstructure and properties of ceramic coatings produced on 2024 aluminum alloy by microarc oxidation
The microstructures of the microarc oxidation coatings and 2024 aluminum alloy substrate were observed using the scanning electron microscope (SEM) and the phase composition of the coatings was analyzed by X-ray diffraction (XRD).
The composites all displayed larger apparent threshold stress σth than the previously reported unreinforced P/M 2024 aluminum alloy.
Deformation mechanism of compression of 2024 Al alloy in semi-solid state
The deformation mechanism of alloy in the semi-solid state has been investigated, with the compression of 2024 Al alloy in the semi-solid state as an example.
The mechanical behavior and failure mechanism of honeycomb composite consisting of Nomex honeycomb core and 2024Al alloy facesheets were investigated.
Microstructure and fatigue characteristics of direct chill cast and electromagnetic cast 2024 Al alloy ingots
The fatigue strength of the square and rectangular bars was measured to be 85 and 90 pct of their yield strength, respectively, more than twice that of the predecessor to the 2026 alloy (the AA 2024 Al alloy).
However, it was found that addition of TiC particles in the composite without heat treatment reduced the anodic current density and the number and size of pits in the Al-2024 alloy.
When the heat treatment was applied to the composite, either artificially or naturally aged, the anodic current density of the Al-2024 alloy increased.
These alloys include 2024 alloy, 7075 alloy and 7075 alloy modified with 1.0% Fe and 1.0% Ni.The deposits possessed rapid solidification microstructure with grain size of about 20 μm and a relative density of over 94%.
The results showed that the 3F0N alloy, PM 2024Al with 3 mass% Fe single addition, exhibited poor aging ability compared to 2024 alloy.
Whereas the 3F5N alloy, PM 2024Al with a 3 mass% Fe and 5 mass% Ni combined addition, showed almost the same age hardenability compared to PM 2024 alloy.