High-temperature abrasive wear characteristics of H13 steel modified by laser remelting and cladded with Stellite 6 and Stellite 6/30% WC

Karmakar, Debapriya Patra and Muvvala, Gopinath and Nath, Ashish Kumar (2021) High-temperature abrasive wear characteristics of H13 steel modified by laser remelting and cladded with Stellite 6 and Stellite 6/30% WC. Surface and Coatings Technology, 422. pp. 1-12. ISSN 0257-8972

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Abstract

The study is aimed to analyse the comparative behaviour of the high-temperature abrasive wear of H13 steel surfaces modified by laser melting and cladding with Stellite 6 and Stellite 6 + 30 wt% WC. 3-body abrasive tests were conducted at room temperature, 450 °C, 550 °C, and 650 °C. The microstructural evolution, microhardness, wear surface morphology and mechanisms, and various phases formed during laser surface modifications were also studied. The laser remelting of H13 steel surface increased its room temperature microhardness to 750 ± 35 HV0.01, whereas laser cladding of Stellite 6 powder yielded hardness of around 600 ± 20 HV0.01 in the clad layer; and Stellite 6/WC composite clad layer had marginally higher hardness than the Stellite 6 clad layer in the matrix and much higher hardness of ~3000 HV0.01 at the sporadically distributed WC particle sites. Though the room temperature microhardness of laser remelted H13 surface is the highest, the volumetric wear loss in it was comparable to that of the Stellite 6 cladding. However, Stellite 6/WC composite layer recorded a relatively less volumetric loss as WC particles resisted the abrasive wear. With increasing temperature, the wear loss in laser remelt surfaces increased at a fast rate, while that in Stellite 6 and composite clad layers varied marginally with no definite trend. Overall, Stellite 6/WC composite cladding performed better than others in the current temperature range. © 2021 Elsevier B.V.

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IITH Creators:

IITH Creators	ORCiD
Muvvala, Gopinath	https://orcid.org/0000-0002-2133-3686

Item Type:

Article

Additional Information:

Authors gratefully acknowledge the financial support from the Department of Science and Technology, Government of India , under the FIST Program-2007 ( SR/FIST/ETII-031/2007 ), and Ministry of Human Resource Development and Department of Heavy Industries, Government of India , under the IMPRINT Program-2017 for Project-6917.

Uncontrolled Keywords:

AISI H13 steel; High-temperature abrasive wear; Laser cladding; Laser remelting; Stellite 6; WC metal matrix composite

Subjects:

Physics > Mechanical and aerospace

Divisions:

Department of Mechanical & Aerospace Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

25 Aug 2022 13:08

Last Modified:

25 Aug 2022 13:08