Enhancing mechanical properties and corrosion performance of AA6063 aluminum alloys through constrained groove pressing technique

Autor: Ceren Gode, Ren-jie Fan, Mahmoud Ebrahimi, Mahmoud Shamsborhan, Hatice Varol Özkavak, Shokouh Attarilar
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Equiaxed crystals
Morphology
Materials science
Aluminum corrosion
Passivation
Elongated grains
Alloy
chemistry.chemical_element
02 engineering and technology
engineering.material
mechanical properties
01 natural sciences
Corrosion
constrained groove pressing technique
Constrained groove pressing
Aluminium
Hardness
Electrochemical reactions
Phase (matter)
hardness distribution homogeneity
0103 physical sciences
Materials Chemistry
grain refinement
Composite material
Groove (engineering)
010302 applied physics
Pressing
corrosion resistance
Metals and Alloys
Second phase
Textures
021001 nanoscience & nanotechnology
Geotechnical Engineering and Engineering Geology
Condensed Matter Physics
Aluminum alloys
chemistry
Corrosion performance
Passivation film
Processed materials
engineering
Aluminum sheet
aluminum alloy
0210 nano-technology
Popis: The use of a constrained groove pressing (CGP) method to plastically deform AA6063 aluminum alloy led to the improved surface properties. It was found that hardness magnitude is dramatically improved and its uniformity is considerably decreased after the first pass, while subsequent passes result in better hardness behavior for the processed material. Also, the elongated grains formed in the first pass of the CGP are gradually converted to the equiaxed counterparts by adding pass numbers. Eventually, higher corrosion resistance of the sample by imposing the CGP process is related to the quick formation of passivation film and the change in the morphology of the second phase and precipitates which hinder their electrochemical reactions and decrease the potential localized attack sites. © 2020 The Nonferrous Metals Society of China
Databáze: OpenAIRE
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