Wear performance of laser surface hardened GCr15 steel

Lei, Sheng; Quan-kun, Liu; Ma, Y.P.; Ren, Jingming

doi:10.1007/s11595-010-1084-x

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…[ 13,14 ] With the development of laser technology, especially the application of a rectangular laser beam with a large width, laser surface hardening of 52100 steel has attracted significant attention. Lei et al [ 15 ] reported that not only the wear property, but also the thermal stability of 52100 steel could be improved through laser surface treatment. Lin et al [ 16 ] and Wang et al [ 17 ] proposed that water cooling could be imposed during laser surface remelting, which could increase its surface hardness to ≈1150 HV due to microstructure refinement.…”

Section: Introductionmentioning

confidence: 99%

Effect of Preheating on the Microstructure, Impact Properties, and Fracture Mechanisms of a Laser Surface‐Hardened High‐Carbon–Chromium Steel

Yao

et al. 2021

steel research int.

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To optimize the toughness and hardness of laser surface‐hardened high‐carbon–chromium (52100) steel, the effect of preheating on microstructure evolution and impact property is studied, and the impact fracture mechanism is analyzed. The results indicate that preheating deepens the hardened depth, facilitating grain coarsening and cementite dissolution near the surface. Regardless of preheating, the size distribution of cementite follows a typical lognormal distribution. Laser surface hardening leads to a decrease in impact absorbed energy. Preheating at 160 °C increases the impact absorbed energy by ≈25%, at which point the maximum hardness is still as high as 860 HV0.3. The impact absorbed energy of spheroidized microstructure tends to be larger before laser hardening and reduces after laser hardening. The impact toughness is the combined result of the brittleness of the hardened layer, residual stress, and substrate microstructure. Under the impact load, microcracks nucleate near the surface of the hardened layer and propagate in the form of intergranular fracture and then propagate in the form of transgranular fracture toward the inside of the hardening layer and substrate. Herein, a novelty research work on optimizing the impact properties during laser hardening through preheating and adjusting initial microstructure is provided.

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Section: Introductionmentioning

confidence: 99%

Effect of Preheating on the Microstructure, Impact Properties, and Fracture Mechanisms of a Laser Surface‐Hardened High‐Carbon–Chromium Steel

Yao

et al. 2021

steel research int.

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“…In laser quenching, a thin layer of the substrate is rapidly heated well into the range of austenitizing temperature by laser heating and is cooled subsequently at a very fast rate. Rapid heating and cooling are the key characteristics of laser quenching that enable the formation of a martensitic microstructure on the surface and thereby improve its hardness and wear resistance [3,4]. The technology of low temperature ion sulfurizing can form a sulphide layer contains FeS phase on the surface of steel.…”

Section: Introductionmentioning

confidence: 99%

Novel Surface Treat Technology for Improving Wear-Resistant Properties of Cylinder Liner

Cai

Zhang

Qing-qiang

2010

AMR

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In order to solve the problem of wear-out–failure of diesel engine cylinder, the laser-quenching and low temperature ion sulfurizing complex surface treatment technology was operated on the surface of 42MnCr52 steel. And the tribological properties of the complex layer were investigated。Experimental results indicated that the complex layer is composed of soft surface sulphide layer and sub-surface laser-quenching harden layer, represents excellent friction-reduction and wear-resistance performance at high temperature. The synergistic effect of the laser quenching-sulphide layer resulted in 20% increase in hardness, 10% reduction in friction coefficient and 50% reduction in wear weight loss, respectively, compared with those of the standard samples. The bench-test further demonstrated that this technology can improve the lubricating condition between cylinder and piston ring, and reduce both abnormity wear when the lubricating oil is deficiency at the time of start-up and sticking wear at high temperature during the operating period, and then prolong the service life of engine.

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“…The bigger the wear scar width measured, the greater the wear volume (ΔV) calculated, the worse the abrasion resistance of the material;On the contrary, The smaller the wear scar width measured, the smaller the wear volume (ΔV) calculated, the better the abrasion resistance of the material [5]. The results are shown in Table 5.…”

mentioning

confidence: 96%

The Influence of GGG70L Laser Surface Hardening Power on Quenched Layer Performance

Jin

Wang

et al. 2013

AMR

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GGG70L die material laser phase change hardening aims to discover the Quenched Layer performance of the GGG70L die material hardened by the laser of different power. Making comparison and analysis in the experiment and considering the actual production factors such as cost, working efficiency and product quality standard, it is concluded that laser power being 1900 w, laser scanning speed 6mm/s, spot size 3×15 mm2, focal length being 305mm, the surface of the material quality can meet the requirements of industrial production, laser surface quenched layer becomes harder, good abrasion resistance on the surface of the material is obtained.

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Wear performance of laser surface hardened GCr15 steel

Cited by 7 publications

References 9 publications

Effect of Preheating on the Microstructure, Impact Properties, and Fracture Mechanisms of a Laser Surface‐Hardened High‐Carbon–Chromium Steel

Effect of Preheating on the Microstructure, Impact Properties, and Fracture Mechanisms of a Laser Surface‐Hardened High‐Carbon–Chromium Steel

Novel Surface Treat Technology for Improving Wear-Resistant Properties of Cylinder Liner

The Influence of GGG70L Laser Surface Hardening Power on Quenched Layer Performance

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