Effect of Processing Conditions on the Microstructure Development during Constrained Groove Pressing of Aluminium

Jozef Zrník; Libor Kraus; Miroslav Cieslar; Peter Sláma

doi:10.4028/www.scientific.net/MSF.783-786.331

Paper Titles

Mechanical Properties of Al-10 Mass % Si-Mg High-Pressure Die-Casting Alloy with Different Mg Content
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Influence of Cold Rolling Reduction and Cross Rolling on Recrystallization Texture Formation in Electro Deposited Pure Iron with a Sharp and Homogeneous <111>//ND Fiber
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The Numerical and Experimental Study on Electromagnet-Air Knife DC Casting Process of Large-Size AA 7055 Aluminum Alloys
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The Numerical and Experimental Study on DC Casting Process of Three-Layer Composite Ingots of 4045/3004/4045 Aluminum Alloys
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Effect of Processing Conditions on the Microstructure Development during Constrained Groove Pressing of Aluminium
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Tensile Deformation of Magnesium and Magnesium Alloy Single Crystals
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Corrosion Characterization of Magnesium Alloys – The Role of Process Parameters
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Parameters Controlling High Temperature Deformability of Wrought Magnesium Alloys
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The Effect of Ce Addition on the Creep Resistant Mg-Sr-Mn Alloys
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HomeMaterials Science ForumMaterials Science Forum Vols. 783-786Effect of Processing Conditions on the...

Effect of Processing Conditions on the Microstructure Development during Constrained Groove Pressing of Aluminium

Abstract:

In this study, the relationship between the structure and properties of commercial purityaluminium (AW-1199) was investigated by applying constrained groove pressing (CGP) method.The refinement of the coarse grain aluminium microstructure to submicrocrystalline size by largeplastic strain at room temperature defined. The impact of various strains upon microstructurechanges is investigated using transmission electron microscopy (TEM) and electron back scatterdiffraction (EBSD). A mixture of subgrains produced by grains subdivision and polygonizedsubgrains formed locally due to dynamic recovery was found in the deformed aluminium. Thetensile properties and resulting hardness are related to microstructural evolution induced by CGP. Asubstantial impact of straining upon the increasing in tensile strength was observed after the firstpass. Further strain increase had an insignificant effect on tensile strength but was accompanied byductility loss. The post deformation annealing effect was then explored with aim to increase theductility. The results indicate that changes in strength and ductility may be related to formation of abimodal structure.