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Journal of Materials Science

, Volume 44, Issue 12, pp 3273–3284 | Cite as

TiB2-reinforced composite coating by gas tungsten arc welding

  • S. O. YilmazEmail author
  • M. Ozenbas
Article

Abstract

In situ synthesized TiB2-reinforced Fe-based coating was fabricated by gas tungsten arc welding (GTAW) on AISI-4340 steel substrate using cheaper Fe–Ti, Fe–Cr, Fe–W, Fe–B alloys and B2O3 powders. The effects of processing parameters on the coating were investigated experimentally. Primary dendrites of ferrite (α) phase and complex TiB2, Fe2B borides were detected at the coated surface. The experimental results show that either coated surface or interface microstructures were formed by the distribution of particularly boron and titanium concentration. The difference in hardness of the microstructures is specifically attributed to the type of borides. The type, dimension, and the volume concentration changes of borides were correlated with the parameters as the concentration of additives and the dilution from the base material. The surfaces were subsequently characterized by scanning electron microscopy (SEM), the energy dispersive X-ray spectrometry (EDS), X-ray diffraction (XRD), and differential thermal analysis (DTA).

Keywords

Wear Rate B2O3 Boride FeCr Coated Surface 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The authors gratefully acknowledge the assistance the committee of scientific research/TÜBİTAK for its support of this research (grant No.105m355/2007). The authors would like also to gratefully acknowledge the use of laboratory facilities at METU and Firat University, Türkiye.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Faculty of Engineering, Department of Metallurgical and Materials EngineeringFırat UniversityElazığTurkey
  2. 2.Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkaraTurkey

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