Journal of Materials Science

, Volume 25, Issue 1, pp 624–628 | Cite as

Estimation of the mean size of the cementite particles by hardness measurement in plain carbon steel

  • S. K. Das
  • A. Biswas


The relationship between the Vicker's hardness VHN and the mean size of the coarsening cementite particles, ¯d in plain carbon steel during tempering at high temperature has been deduced and corroborated by experimental data analysis. It is found that VHN varies linearly with 1/¯d. Hardened plain carbon steel with 0.68, 0.56 and 0.34% carbon, has been tempered at 973 to 861 K as a function of time for the investigation. A master plot of VHN against ¯d(1−Vv)/Vv has been drawn which provides the mean particle diameter of the cementite particles as a function of hardness, irrespective of time and temperature of tempering and carbon content of the steel.


Polymer Experimental Data Data Analysis Carbon Content Carbon Steel 
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Copyright information

© Chapman and Hall Ltd. 1990

Authors and Affiliations

  • S. K. Das
    • 1
  • A. Biswas
    • 1
  1. 1.Department of Metallurgical EngineeringIndian Institute of TechnologyKharagpurIndia

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