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Influence of groove pressing process on the drawability (R value) of aluminium alloy AA 5052 sheets
Ekta Jain,
Published in Trans Tech Publications Ltd
2013
Volume: 765
   
Pages: 363 - 367
Abstract
Aluminium alloy sheets have poor drawability compared to steel sheets as indicated by the values of the plastic strain ratio or the R value. Because of the textures developed during commercial annealing and cold rolling processes, the R value for aluminium alloys is typically less than 1. Since the R value is heavily influenced by the crystallographic texture in the sheet, processes that develop a favourable texture can be utilised to improve the R value. In this study, a severe plastic deformation process called groove pressing has been used to repeatedly deform sheet specimens of aluminium alloy AA 5052. The R values of groove pressed specimens were experimentally determined. X-ray diffraction scans of the groove pressed specimens were carried out to measure the relative intensities of (111) and (002) peaks in the pattern. The largest increase in the R value was for specimens cut at 90° to the rolling direction and groove pressed to four passes. XRD data indicate that the groove pressing process is capable of introducing a favourable shear texture. © (2013) Trans Tech Publications, Switzerland.
About the journal
JournalMaterials Science Forum
PublisherTrans Tech Publications Ltd
ISSN02555476
Open AccessNo
Concepts (15)
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    ALUMINIUM-ALLOY SHEETS
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    COLD ROLLING PROCESS
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    Crystallographic textures
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    DRAWABILITY
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    GROOVE PRESSING
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    PLASTIC STRAIN RATIOS
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    R VALUE
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    SEVERE PLASTIC DEFORMATION PROCESS
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    Aluminum alloys
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    Cold rolling
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    LIGHT METALS
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    Plastic deformation
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    Textures
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    X ray diffraction
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    Aluminum sheet