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Machinability Study of Stir Cast Hypoeutectic Aluminum-Silicon Alloys During Turning

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Abstract

The influence of Be and Cd (iron correctors) on mechanical properties and machining behavior of hypoeutectic Al-Si alloy (Al-7Si-0.5Mg-1.2Fe) processed by conventional and semi-solid metal (SSM) processing (stir casting) techniques is investigated. The alloys under investigation were prepared by controlling melt in an induction melting furnace. The stirring of SSM was carried out at a constant stirring speed of 400 rpm under constant cooling conditions from liquidus temperature. The turning operations were carried out under dry conditions on a CNC turning center using coated-carbide insert by varying cutting speed, feed rate, depth of cut, and approaching angle. An orthogonal array, the signal-to-noise ratio, and analysis of variance were employed to study the machining performance characteristics. The results indicate that Be/Cd modification of the alloy and selected cutting parameters significantly affect the machining characteristics. The feed rate, cutting speed, and Cd as an iron corrector have more effect on the machining behavior of the alloys under study.

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Acknowledgments

The authors gratefully acknowledge the NIT authorities for providing the facilities and financial support to carry out this study. The authors also acknowledge the technical support provided by the staff of Central workshop and Mechanical Engineering Department NIT, Hamirpur and IIT Roorkee during preparation and testing of the alloys.

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Authors and Affiliations

  1. Department of Mechanical Engineering, National Institute of Technology, Hamirpur, Hamirpur, 177005, Himachal Pradesh, India

    P. K. Sood & Rakesh Sehgal

  2. Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee, Roorkee, 247667, India

    D. K. Dwivedi

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  1. P. K. Sood
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  2. Rakesh Sehgal
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  3. D. K. Dwivedi
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Correspondence to Rakesh Sehgal.

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Sood, P.K., Sehgal, R. & Dwivedi, D.K. Machinability Study of Stir Cast Hypoeutectic Aluminum-Silicon Alloys During Turning. J. of Materi Eng and Perform 22, 470–482 (2013). https://doi.org/10.1007/s11665-012-0287-z

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  • DOI: https://doi.org/10.1007/s11665-012-0287-z

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