Effect of Crystal Orientation on Textures of Electromagnetic Stirred Aluminum Alloy

Dock Young Lee; Suk Won Kang; Ki Bae Kim

doi:10.4028/www.scientific.net/SSP.116-117.779

Paper Titles

Thixoforging of 7075 Aluminium Alloys at High Solid Fraction
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Flatness Based Inductive Reheating of A356 Billets into the Semi-Solid State
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Development of Thixoextrusion Process for 7000 Series Al Wrought Alloys
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Structural Evolution and Deformation Behavior of Extruded AZ91 with Ca Addition in the Semi-Solid State
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Effect of Crystal Orientation on Textures of Electromagnetic Stirred Aluminum Alloy
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Grain Size Control of Wrought Aluminum Alloy for Rheology Forging by Electromagnetic Stirring and Its Mechanical Properties
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Thixoextrusion Process of AZ31 Mg Wrought Alloy
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Hot Forging of Semi Solidified High Strength Brass
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A Study on the Composition Determination of Cu Alloys by Image Processing Technology
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HomeSolid State PhenomenaSolid State Phenomena Vols. 116-117Effect of Crystal Orientation on Textures of...

Effect of Crystal Orientation on Textures of Electromagnetic Stirred Aluminum Alloy

Abstract:

Recently, a rheocasting process has been interested to produce a structural part for an automobile industry and so the slurry-on-demand process to make the semi-solid slurry having a fine and globular microstructure has been very important to produce a high quality and cost effective part in the rheocasting process. An electromagnetic (EM) stirrer employing for a slurry making process was designed and prepared to induce simultaneously both a circumferential and vertical fluid flow of a melt in order to control a rotation angle of EM stirring of a poured melt. In the present study, the semi-solid slurry of Al-15%Cu alloy was produced in the EM stirrer and its microstructure and the orientation distribution function calculated from the pole figure data was examined in accordance with a various rotation angle of EM stirring between 0˚ (circumferential flow) and 90˚ (vertical flow). The size and morphology of primary α phase was affected with a rotation angle of EM stirring and the finest and the most globular primary α phase could be obtained at a rotation angle of EM stirring of 45˚ and 60˚. Also, due to the EM stirring the tendency to random orientation was appeared. Also, the tendency of random orientation was the most at a rotation angle of 45˚ and 60˚. Therefore, it was considered that the rotation angle of EM stirring of 45˚ and 60˚ was the most effective to induce the non-dendritic growth of primary solid phase of EM stirred Al-Cu alloy.