Effect of nano-WC on wear and impact resistance of Ni-based multi-layer coating by laser cladding

Li, Yunfeng; Shi, Yan; Tang, Shufeng; Wu, Jianxin; Zhang, Wenzhi; Wang, Jiasheng

doi:10.1007/s00170-023-12035-3

Cited by 1 publication

(1 citation statement)

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“…Adding nano-WC can not only hinder the growth of dendrites but also promote heterogeneous nucleation to reduce grain size. The microstructure of the coating can be modified to enhance its wear resistance and corrosion resistance [15][16][17][18]. Additionally, the incorporation of nanoparticles facilitates improved interface contact, thereby reducing crack formation and defects, and ultimately enhancing adhesion between the coating and substrate [19].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Study on Microstructure and Wear Behavior of Nano-WC Reinforced Ni60 Laser Coating on 17-4PH Stainless Steel

Wang,

Zhang,

Qiao

et al. 2024

Coatings

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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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