During the solution heat treatment (SHT) process of aluminum alloys, precipitates dissolve into matrix. To predict dissolution time, modeling isothermal in 6061 alloy during SHT was conducted. A precipitate model established, and flowchart designed as well. Then explicit finite-difference method employed to solve model, mobile nodes used deal with moving interface. The simulation based on real ...

Abstract Cold spray is considered as an emerging technique for preparing wear-resistant metal matrix composite coatings on the surface of various kinds metallic materials. In this work, a viable strategy “cold spraying + hot rolling post-treatment” was successfully applied to prepare B 4 C/6061 Al coating commercially available 6061 plates. The results revealed that post-treatment in uniform di...

Sandwich structures used to lightweight telescope mirrors result in subsurface pore or cell-induced surface deformation (called quilting), the unsupported sub-surface regions, during diamond turning of optical surface. An alternative sandwich structure is metal foams made by melt route which have a monolithic porous-nonporous interface naturally formed gravitationally induced drainage effect. T...

wire-brushing is used for different purposes such as removing metal surfaces oxides, increasing surface brightness, improving fatigue properties and surface activation before coating. the wire-brushing severely scratches and stirs the metals in the surface layers, so that complicated metal flow gives rise to very large amount of plastic strain and increases dislocation density of the surface la...

The conjoint influence of welding and artificial aging on mechanical properties were investigated for extrusions of aluminum alloy 6063, 6061, and 6005A. Uniaxial tensile tests were conducted on the aluminum alloys 6063-T4, 6061-T4, and 6005A-T1 in both the as-received (AR) and as-welded (AW) conditions. Tensile tests were also conducted on the AR and AW alloys, subsequent to artificial aging. ...

It has been proposed that with the appropriate models, instrumented indentation test (IIT) data can be reduced to yield the uniaxial stress–strain behavior of the test material. However, very little work has been done to directly compare the results from uniaxial tension and spherical indentation experiments. In this work, indentation and uniaxial tension experiments have been performed on the ...

Electrical connection of dissimilar metals will lead to galvanic corrosion. Therefore, overall surface treatment is necessary for the protection of dissimilar metal welded parts. However, serious unbalanced reactions may occur during overall surface treatment, which makes it difficult to prepare integral coating. In this paper, an overall ceramic coating was fabricated by plasma electrolytic ox...

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