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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13046
Title: Surface hardening by in-situ grown composite layer on microalloyed steel employing TIG arcing process
Authors: Sharma D.
Ghosh P.K.
Kumar S.
Das, Sourav
Anant R.
Kumar N.
Published in: Surface and Coatings Technology
Abstract: Surface of microalloyed steel, hereafter referred as steel, has been modified by developing an in-situ grown composite case on its surface for improved hardness. It is done through surface melting by employing Tungsten Inert Gas (TIG) arcing. The hard reinforcements were made to grow in the surface matrix of steel through chemical reactions of the inorganic powders present in the applied coating and the molten base. The distribution and incorporation of these reinforcements were taken care by addition of Al and TiO2 in the coating. Three different mixtures, comprising different proportions of Al and TiO2, were prepared to develop a hybrid composite primarily containing Al2O3 and a small fraction of TiC along with other oxides as reinforcements. The modified particulate composite surface was analyzed under Vickers' micro-hardness tester confirming its significant improvement in hardness of the order of 1.88–2.24 times in comparison to that of the base metal, depending upon different chemistry of the powder mixture of the coating. © 2018 Elsevier B.V.
Citation: Surface and Coatings Technology (2018), 352(): 144-158
URI: https://doi.org/10.1016/j.surfcoat.2018.08.009
http://repository.iitr.ac.in/handle/123456789/13046
Issue Date: 2018
Publisher: Elsevier B.V.
Keywords: In-situ grown composite
Marangoni effect
Steel
Surface hardening
TIG arcing
ISSN: 2578972
Author Scopus IDs: 51864486900
35459954300
57209547997
9742316900
50461062400
55566839400
Author Affiliations: Sharma, D., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Ghosh, P.K., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Kumar, S., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Das, S., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Anant, R., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Kumar, N., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Corresponding Author: Ghosh, P.K.; Department of Metallurgical and Materials Engineering, Indian Institute of Technology RoorkeeIndia; email: prakgfmtiitr@gmail.com
Appears in Collections:Journal Publications [MT]

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