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Ultimate Tensile Strength of AL-6063 Thixoformed at Different Temperatures


Author : Kushdeep and R.P Singh

Pages : 1573-1576
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Abstract

The Thixoforming process is a new method for manufacturing complicated and net shape component through which high strength materials can be formed more easily. The high mechanical, geometric and surface quality of components produced through Thixoforming can justify the removal of additional production processes such as machining steps and the need for reinforcing inserts. In this study Al alloy 7075 and 6063 which has low extrude ability has been thixoformed by the extrusion process. In this research the effect of Thixoforming with one step, three step induction heating regimes for the temperature range (540 to 580°C) at same die material and same ram speed were investigated. It was found that Ultimate Strength of thixoforming specimen is stable for Al-6 Series alloys in comparison with initial Hot Extrusion ones under T6 tempering condition. The yield strength of Thixoextrusion specimen is comparable with initial hot extrusion ones for Al- (6 and 7) Series alloy under T6 tempering condition. During Thixoforming Process, the materials shows thixotropic behaviour as it is in semi-solid state (Containing 30-40 % liquid and 60-70 % solid). Due to this behaviour the extrusion of the material becomes easier.

Keywords: Thixoforming process, Ultimate Tensile Strength, AL-6063 etc.

Article published in International Journal of Current Engineering and Technology, Vol.5, No.3 (June-2015)

 

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