The surface of 17-4PH martensitic stainless steel was laser-cladded with Ni60 and Ni60+nano-WC composites and a comprehensive investigation was conducted of the microstructure and wear mechanism. The findings demonstrate that despite the added nano-WC particles being fused and dissolved during laser cladding, they still lead to a reduction in grain size and a decrease in crystallographic orientation strength. Furthermore, the dissolution of nano-WC makes the lamellar M23C6 carbides transform into a rod or block morphology, and leads to the CrB borides becoming finer and more evenly dispersed. This microstructural evolution resulted in a uniform increase in hardness and wear resistance, effectively preventing crack formation. When the nano-WC addition increased to 20 wt.%, there was a 27.12% increase in microhardness and an 85.19% decrease in volume wear rate compared to that of the pure Ni60 coating. Through analysis of the microstructure and topography of wear traces, it can be inferred that as the nano-WC addition increased from 0 wt.% up to 20 wt.%, there was a gradual transition from two-body abrasive wear to three-body abrasive wear, ultimately resulting in adherent wear.
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IIT Bhubaneswar, Sch Minerals Met & Mat Engn, Bhubaneswar 752050, Odisha, IndiaIIT Bhubaneswar, Sch Minerals Met & Mat Engn, Bhubaneswar 752050, Odisha, India
Maharana, P.
Sahu, D. K.
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NIT Rourkela, Electromet & Corros Grp, Met & Mat Engn, Rourkela 769008, Odisha, IndiaIIT Bhubaneswar, Sch Minerals Met & Mat Engn, Bhubaneswar 752050, Odisha, India
Sahu, D. K.
Sahoo, D.
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Indian Inst Technol, Mech Engn, Mumbai 400076, IndiaIIT Bhubaneswar, Sch Minerals Met & Mat Engn, Bhubaneswar 752050, Odisha, India
Sahoo, D.
Mallik, A.
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NIT Rourkela, Electromet & Corros Grp, Met & Mat Engn, Rourkela 769008, Odisha, IndiaIIT Bhubaneswar, Sch Minerals Met & Mat Engn, Bhubaneswar 752050, Odisha, India
Mallik, A.
Mishra, S.
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Indian Inst Technol, Mech Engn, Mumbai 400076, IndiaIIT Bhubaneswar, Sch Minerals Met & Mat Engn, Bhubaneswar 752050, Odisha, India
Mishra, S.
Ramakrishna, M.
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Int Adv Res Ctr Powder Met & New Mat, Hyderabad 500005, IndiaIIT Bhubaneswar, Sch Minerals Met & Mat Engn, Bhubaneswar 752050, Odisha, India
Ramakrishna, M.
Prashanth, K. G.
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Tallinn Univ Technol, Dept Mech & Ind Engn, Ehitajate Tee 5, EE-19086 Tallinn, EstoniaIIT Bhubaneswar, Sch Minerals Met & Mat Engn, Bhubaneswar 752050, Odisha, India
Prashanth, K. G.
Gollapudi, S.
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IIT Bhubaneswar, Sch Minerals Met & Mat Engn, Bhubaneswar 752050, Odisha, IndiaIIT Bhubaneswar, Sch Minerals Met & Mat Engn, Bhubaneswar 752050, Odisha, India