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Predicting the effect of machining parameters on turning characteristics of AA7075/TiB2 in situ aluminum matrix composites using empirical relationships

  • A. Pugazhenthi
  • I. Dinaharan
  • G. Kanagaraj
  • J. David Raja Selvam
Technical Paper
  • 29 Downloads

Abstract

Aluminum matrix composites (AMCs) are difficult to machine due to increased tool wear. AA7075/(0–12 wt%) TiB2 in situ AMCs were prepared and turned in a modified conventional lathe using polycrystalline diamond cutting tool. A central composite rotatable design comprising of four process parameters and five levels was utilized to limit the actual experiments required for prediction. The turning parameters such as cutting speed, feed rate, depth of cut and TiB2 particulate content were counted as variables for the experiments. Two empirical relationships were formed for the prediction of the outcome of variable parameters on cutting force and surface roughness. The cutting force showed a downward trend with an increase in cutting speed and TiB2 content. The advancement in feed rate and depth of cut increased the requirement of cutting force. The predicted trends were correlated with the morphology of the tool rake face and the turned surface. The development of built-up edge increased the cutting force requirement and reduced the surface finish due to deposition on the newly turned surface.

Keywords

Aluminum matrix composite Turning Cutting force Surface roughness Empirical relationship 

Notes

Acknowledgements

The authors are grateful to Centre for Research in Design and Manufacturing Engineering (CRDM) at Karunya University and The South India Textile Research Association (SITRA) for providing the facilities to carry out this investigation.

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Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2018

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringAnna UniversityChennaiIndia
  2. 2.Department of Mechanical EngineeringUniversity College of Engineering DindigulDindigulIndia
  3. 3.Department of Mechanical Engineering ScienceUniversity of JohannesburgJohannesburgSouth Africa
  4. 4.Department of Mechantronics EngineeringThiyagarajar College of EngineeringMaduraiIndia
  5. 5.Department of Mechanical EngineeringKarunya Institute of Technology and SciencesCoimbatoreIndia

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