A study of the wear performance of duplex treated commercial low-alloy steel against alumina and WC balls

Abstract

is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. The objective of this work is to study the improvement of the tribological properties of low alloy steel using a duplex treatment of low pressure carburizing and the deposition of a Cr-(WC-Co) coating by dual RF magnetron sputtering. The treatments result in a 500 μm thick carburized layer and a sputtered coating thickness of~2 μm. Tribological tests were made with a ball-on-disk tribometer under dry conditions with low load and low speed. The worn surfaces of the disk, the wear counterpart, and resulting debris were analyzed by X-ray diffraction, optical microscopy, optical profilometry, and a scanning electron microscope equipped with an energy-dispersive X-ray spectrometer. The wear performance of the samples was evaluated in terms of wear rates and friction coefficients during the sliding processes against two different counterparts. Experimental results have shown that sliding wear, of the investigated duplex treated low alloy steels, is strongly dependent on the counterface materials. Under testing conditions, the overall wear performance of a Cr-WC coating (Cr/W ratio of 1.12:1) deposited onto the surface of a carburized low alloy steel (0.61 wt.% C; HV = 654 ± 5) can be recommended as the best. The duplex-treated samples suffered severe, concentrated wear when against alumina. This wear is characterized by a combination of delamination, mild abrasion and oxidative wear. However, the wear mechanism seems to be oxidative and adhesive when against WC balls.

Microstructural and tribological characterization of niobium boride coating produced on AISI 1020 steel via multicomponent boriding

“…for 1 4 The wear crater depth h was calculated according equation (2), where b is the diameter of the wear crater and R is the radius of the ball.…”

“…Aiming low costs, high versatility and availability, carbon steels are extensively studied and applied [1]. Low carbon steels with surface treatments that promote higher hardness and wear resistance can substitute expensive high-alloyed steels in some applications [2,3].…”

Sliding wear behavior of magnetron sputtered chromium carbide thin films

“…Carburized low-alloy steel (Commercial DIN18CrMo4) was used as substrate (Beliardouh et al, 2014a(Beliardouh et al, , 2014b. Thermochemical treatments were conducted to create a hardness profile between the surface and the core of the steel substrate.…”

“…In previous studies (Beliardouh et al, 2014a(Beliardouh et al, , 2014b, mechanical and physical properties of low-alloy steel substrates duplex-treated were reported. The duplex treatment consists of carburizing followed by RF magnetron sputtering deposition of Cr-(WC-Co) coatings.…”

“…The main conclusion was a change in wear mechanisms due to microstructural difference between coatings (Cr:W ratio). On another hand, when wood (beech) was a static partner (Beliardouh et al, 2014a(Beliardouh et al, , 2014b, the effect of a duplex treatment was clearly demonstrated to improve the wear resistance of the substrate.…”