Study of Effect of Gas Tungsten Pulse Arcing on Surface Modification of Martensitic Stainless Steel

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Authors

  • Somnath Basu
     Uttarakhand Technical University, Dehradun ,IN
  • P. K. Ghosh
     Department of Metallurgical and Materials Engineering, IIT Roorkee ,IN
  • J. S. Saini
     DIT University, Dehradun ,IN

DOI:

https://doi.org/10.22486/iwj/2017/v50/i2/146561

Keywords:

Stainless Steel, Thermal Analysis, Fusion Geometry, Microstructure, Hardness.

Abstract

Heat energy generated from Gas Tungsten Pulse Arcing process has been used for surface modification of martensitic stainless steel. Arcing was carried out with varied pulse parameters with heat input maintained constant. Variations were observed in heating and cooling patterns of the fused zone. Their effects on fusion, solidification and consequent influence on microstructure of the fused material have been studied. The Temperature Vs. Time curve and isotherm of the fused zone have been analytically drawn. They are used to predict microstructural changes in the fused and adjacent heat affected zone of modified surface. The theoretical predictions are verified by the relevant observations on the modified surfaces. Improvement in hardness of fused zone compared to base material has been studied in conformity with the microstructural changes of the modified matrix.

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Published

2017-04-01

Issue

Volume 50, Issue 2, April 2017

Section

Research Articles

 

References

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