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Experimental investigation of work hardening, residual stress and microstructure during machining Inconel 718

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Abstract

The influence of high-speed machining under different cutting conditions with different tool materials on microstructure, residual stresses and work hardening of Inconel 718 super alloy has been investigated. The cutting/turning was performed using three different tool materials namely carbide, ceramic, and cBN with constant tool geometry under three different cutting environments such as dry machining, minimum quantity lubrication, and flood cooling cutting condition. Subsurface micro-structural changes, grain refinement, and deformation were observed by using CARL ZIESS optical microscope having 50 X to 1500 X magnification, equipped with Clemex vision professional edition image analysis software. The nature induced residual stresses were measured and analysed using X-ray diffraction technique. Micro-hardness on surface and subsurface was measured by using Vickers micro-hardness tester. An attempt has been made to understand the correlation between work hardening, residual stresses and microstructural alteration.

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Authors and Affiliations

  1. Manufacturing Department, School of Mechanical Engineering, VIT University, Vellore, 632014, India

    M. Anthony Xavior, Patil Mahesh Madhukar & P. Jeyapandiarajan

  2. Materials & Mechanical Entity, VSSC - ISRO, Trivandrum, India

    M. Manohar

Authors
  1. M. Anthony Xavior
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  2. M. Manohar
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  3. Patil Mahesh Madhukar
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  4. P. Jeyapandiarajan
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Correspondence to M. Anthony Xavior.

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Recommended by Associate Editor Jin Weon Kim

M. Anthony Xavior is a Professor in Manufacturing Department, School of Mechanical Engineering, VIT University, Vellore, India. He has around eight years of industrial experience and eighteen years of teaching / research experience. His area of research interests include manufacturing, machinability, powder metallurgy, metal matrix composites and computing based manufacturing systems. He had published around 100 papers in international and national journals and conference proceedings in the area of manufacturing. He had produced five Doctorates and one Masters by Research in the field of metal matrix composites and machinability studies.

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Anthony Xavior, M., Manohar, M., Madhukar, P.M. et al. Experimental investigation of work hardening, residual stress and microstructure during machining Inconel 718. J Mech Sci Technol 31, 4789–4794 (2017). https://doi.org/10.1007/s12206-017-0926-2

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  • DOI: https://doi.org/10.1007/s12206-017-0926-2

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