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Characterization of shear stresses in nickel-based superalloy Mar-M247 when orthogonal machining with coated carbide tools

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Abstract

Mar-M247 is a nickel-based alloy which is well known as difficult-to-machine material due to its characteristics of high strength, poor thermal diffusion and work hardening. Calculation of shear stress by an analytical force model to indicate the effect of coating material, cutting speed, feed rate on tool life and surface roughness was conducted experimentally. Cutting tests were performed using round inserts, with cutting speeds ranging from 50 to 300 m/min, and feed rates from 0.1 to 0.4 mm/tooth, without using cooling liquids. The behavior of the TiN and TiCN layers using various cutting conditions was analyzed with orthogonal machining force model. Cutting results indicate that different coated tools, together with cutting variables, play a significant role in determining the machinability when milling Mar-M247.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Chin-Yi University of Technology, Tai Chung, China

    Shao-hsien Chen & Wern-dare Jehng

  2. Department of Mechanical Engineering, Chung Cheng University, Chun Yi, China

    Sen-chieh Su

Authors
  1. Shao-hsien Chen
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  2. Sen-chieh Su
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  3. Wern-dare Jehng
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Correspondence to Shao-hsien Chen.

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Chen, Sh., Su, Sc. & Jehng, Wd. Characterization of shear stresses in nickel-based superalloy Mar-M247 when orthogonal machining with coated carbide tools. J. Cent. South Univ. 21, 862–869 (2014). https://doi.org/10.1007/s11771-014-2011-7

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  • DOI: https://doi.org/10.1007/s11771-014-2011-7

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