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Research Article

Surface modification by in-situ grown TiC in the bainitic matrix using TIG arcing

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Pages 1095-1109 | Received 01 Jan 2022, Accepted 24 Apr 2022, Published online: 19 May 2022
 

Abstract

In the current study, surface modification of the steel was carried out with the in-situ formation of TiC in the bainite matrix using tungsten inert gas (TIG) arcing. The actual arcing parameters were optimised after thermal simulation considering the final phase transformation. Various characterisation techniques revealed the formation of fine nano as well as micron-sized in-situ grown titanium carbide precipitate within the bainite matrix. The morphology and coherency of fine TiC were analysed by high-resolution transmission electron microscopy. Mechanical properties of the modified surface were significantly improved owing to the combined effect of bainite and TiC formation. The coherent precipitates indicate superior wear resistance with the absence of pull-out particle during sliding wear.

Acknowledgements

The authors are thankful to the Head, MMED IIT Roorkee for allowing us to access the experimental facilities.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

One of the authors (NKP) acknowledges the support received from Ministry of Education, Government of India as scholarship.

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