Study on Wear-Resistance of Laser Surface Remelted-Strengthening High NiCr Indefinite Chilled Iron Roll Material

Rolling friction and abrasion test of high NiCr indefinite chilled iron roll material was developed on Arms Abrasion Tester made in Japan. The results showed that among two groups of samples with laser surface remelted-strengthening, C2 group samples of higher laser power and quicker linear speed had higher wear-resistance, and №6 sample of C2 group has the best with 1.5 mm beam diameter, 240-250W power and 30 mm/s linear speed, its total wear extent of three work conditions was only 16.3mg, and its wear-resistance increased 34.8% compared with №3 sample which had the best wear-resistance in C1 group without laser surface remelted-strengthening,; and for contrast of average wear-resistance of three work conditions, C2 group increased 49.3% compared with C1 group, it was showed that the effect of laser surface remelted-strengthening on high NiCr indefinite chilled iron roll material were very evident.

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Tribological effects of laser surface texturing and residual stress

Industrial Lubrication and Tribology ◽

10.1108/ilt-11-2016-0282 ◽

2018 ◽

Vol 70 (1) ◽

pp. 126-132 ◽

Cited By ~ 7

Author(s):

Shuwen Wang ◽

Feiyan Yan ◽

Ao Chen

Keyword(s):

Residual Stress ◽

Wear Resistance ◽

Friction And Wear ◽

Surface Texturing ◽

Laser Surface ◽

Friction Reduction ◽

Laser Surface Texturing ◽

Wear Testing ◽

Content Type ◽

Surface Textures

Purpose The purpose of this paper is to investigate the tribological effects of laser surface texturing (LST) and residual stress on functional surfaces. Design/methodology/approach Three different surface textures (circular dimple, elliptical dimple and groove) with two different textured area ratios (10 and 20 per cent) are designed and fabricated by a Picosecond Nd YAG Laser machine. The friction and wear performance of textured specimens is tested using a UMT-2 friction and wear testing machine in mixed lubrication. Findings Test results show that elliptical dimples exhibit the best performance in wear resistance, circular dimples in friction reduction and grooves in stabilization of friction. The surfaces with larger textured area density exhibit better performance in both friction reduction and wear resistance. The improved performance of LST is the coupled effect of surface texture and residual stress. Originality/value The findings of this study may provide guidance for optimal design of functional surface textures in reciprocating sliding contacts under mixed or hydrodynamic lubrication, which can be used in automotive and other industrial applications.

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The Influence of Laser Irradiation Parameters on Tribological Behaviour of Commercially Pure Titanium for Dental Prostheses

Volume 14: Emerging Technologies; Materials: Genetics to Structures; Safety Engineering and Risk Analysis ◽

10.1115/imece2016-66524 ◽

2016 ◽

Author(s):

Karibeeran Shanmuga Sundaram ◽

Gurusami Kiliyappan ◽

Senthil Kumaran Selvadurai

Keyword(s):

Surface Roughness ◽

Wear Resistance ◽

Pure Titanium ◽

Laser Surface ◽

Commercially Pure Titanium ◽

Laser Shock ◽

Micro Hardness ◽

Dental Prostheses ◽

Commercially Pure ◽

Cp Ti

Laser shock peening (LSP) is one of the innovative technique that produces a compressive residual stress on the surface of metallic materials, thereby significantly increasing its fatigue life in applications where failure is caused by surface-initiated cracks. The specimens were treated with laser shock waves with different processing parameters, and characterization studies were made on treated specimens. The purpose of the present study was to investigate the influence of Nd:YAG laser on commercially pure titanium (CP-Ti) used in prosthetic dental restorations. The treatment influenced change in microstructure, micro hardness, surface roughness, and wear resistance characteristics. Though CP-Ti is considered as an excellent material for dental applications due to its outstanding biocompatibility, it is not suitable when high mastication forces are applied. In the present study, pulsed Nd:YAG laser surface treatment technique was adopted to improve the wear resistance of CP-Ti. The wear test pin specimens of CP-Ti were investment cast with centrifugal titanium casting machine. The wear properties of specimens were evaluated after LSP on a “pin-on-disc” wear testing tribometer, as per ASTM G99-05 standards. The results of the wear experiment showed that the treated laser surface has higher wear resistance, micro hardness, and surface roughness compared to as-cast samples. The improvement of wear resistance may be attributed due to grain refinement imparted by LSP processes. The microstructure, wear surfaces, wear debris, and morphology of the specimen were analyzed by using optical electron microscope, scanning electron microscope, and X-ray diffraction (XRD). The data were compared using ANOVA and post-hoc Tukey tests. The characteristic change resulted in increase in wear resistance and decrease in wear rate. Hence, it is evident that the more reliable and removable partial denture metal frameworks for dental prostheses may find its applications.

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Improvement in wear resistance of hyper-eutectic AlSi cast alloy by laser surface remelting

Surface and Coatings Technology ◽

10.1016/s0257-8972(03)00100-2 ◽

2003 ◽

Vol 169-170 ◽

pp. 468-471 ◽

Cited By ~ 62

Author(s):

S. Tomida ◽

K. Nakata ◽

S. Shibata ◽

I. Zenkouji ◽

S. Saji

Keyword(s):

Wear Resistance ◽

Cast Alloy ◽

Laser Surface ◽

Laser Surface Remelting

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Research on Process Optimization and Abrasion Resistance of Plasma Spraying Al2O3-13wt%TiO2 Coating

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.341-342.92 ◽

2013 ◽

Vol 341-342 ◽

pp. 92-95

Author(s):

Li Jun Wang ◽

Jian Jun Hao ◽

Yue Jin Ma ◽

Jian Guo Zhao ◽

Jian Chang Li

Keyword(s):

Wear Resistance ◽

Plasma Spraying ◽

Friction And Wear ◽

Performance Test ◽

Sample Surface ◽

Coating Performance ◽

The Matrix ◽

Average Wear ◽

And Performance ◽

Spraying Process

Using plasma spraying equipment to prepare Al2O3-13wt%TiO2 coating on Q235 substrate. Study of its organization and performance, test the performance of coating microhardness and the resistance of friction and wear resistance then optimize the spraying process parameters. The surface of the coating performance was studied by SEM. The results show that, Coating microhardness can be as high as 1132HV, Far more than the matrix microhardness. The minimum average wear weightlessness of Sample surface is 0.95mg. Greatly improve the wear resistance

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Influences of Laser Surface Treatment on Mircostructure and Wear Resistance of Electroless Composite Plated NiAl/Nano Al2O3Coatings

Laser & Optoelectronics Progress ◽

10.3788/lop47.101405 ◽

2010 ◽

Vol 47 (10) ◽

pp. 101405 ◽

Cited By ~ 1

Author(s):

楼聃 Lou Dan ◽

丁庆明 Ding Qingming ◽

楼程华 Lou Chenghua ◽

姚建华 Yao Jianhua

Keyword(s):

Wear Resistance ◽

Surface Treatment ◽

Laser Surface ◽

Laser Surface Treatment

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Abrasive Wear Resistance Comparative Analysis of the Metal Surfaced by Flux Cored Wires Systems Fe-C-Si-Mn-Ni-Mo-W-V and Fe-C-Si-Mn-Cr-Ni-Mo-V

Materials Science Forum ◽

10.4028/www.scientific.net/msf.906.1 ◽

2017 ◽

Vol 906 ◽

pp. 1-7 ◽

Cited By ~ 2

Author(s):

I.V. Osetkovskiy ◽

N.A. Kozyrev ◽

R.E. Kryukov

Keyword(s):

Grain Size ◽

Wear Resistance ◽

Comparative Analysis ◽

Chemical Composition ◽

Abrasive Wear ◽

Abrasive Wear Resistance ◽

Metallographic Analysis ◽

Deposited Metal ◽

Cored Wires ◽

Made In

In the article is shown the comparative analysis between structures of surfaced by the flux coded wire metal systems Fe-C-Si-Mn-Cr-Ni-Mo-V and Fe-C-Si-Mn-Ni-Mo-W-V. These powder wires are supposed to be used in recovering details and equipment components and machines, that works in conditions of intensive abrasive – shock wear. Manufacturing and surfacing of flux cored wires samples were made in laboratory conditions. Defined chemical composition of the surfaced metal. Deposited metal samples hardness and wear resistance were researched. In the course of deposited meta surface metallographic analysis were made following metallographic researches: defined nature and level of nonmetallic oxides impurity, type and morphology of the microstructure, grain size of surfaced samples. Estimation of the chemical composition components influence on the hardness and wear resistance were obtained.

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Characterization of dry sliding wear resistance of laser surface hardened En 8 steel

Journal of Materials Processing Technology ◽

10.1016/j.jmatprotec.2004.09.085 ◽

2005 ◽

Vol 167 (1) ◽

pp. 83-90 ◽

Cited By ~ 16

Author(s):

Rakesh Kaul ◽

P. Ganesh ◽

Pragya Tiwari ◽

R.V. Nandedkar ◽

A.K. Nath

Keyword(s):

Wear Resistance ◽

Sliding Wear ◽

Laser Surface ◽

Dry Sliding Wear ◽

Dry Sliding

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Wear resistance of a bearing steel processed by laser surface remelting cooled by water

Scripta Materialia ◽

10.1016/j.scriptamat.2010.06.030 ◽

2010 ◽

Vol 63 (8) ◽

pp. 839-842 ◽

Cited By ~ 16

Author(s):

Peng-yu Lin ◽

Yong-fu Zhu ◽

Hong Zhou ◽

Cheng-tao Wang ◽

Lu-quan Ren

Keyword(s):

Wear Resistance ◽

Bearing Steel ◽

Laser Surface ◽

Laser Surface Remelting

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A Process Model for Laser Surface Treatment of Plasma Sprayed Coatings

Heat Transfer, Volume 2 ◽

10.1115/imece2004-59969 ◽

2004 ◽

Author(s):

J. Wu ◽

J. Choi ◽

S. Zhang ◽

G. Hilmas

Keyword(s):

Surface Roughness ◽

Surface Treatment ◽

Process Model ◽

Laser Surface ◽

Treatment Technique ◽

Beam Diameter ◽

Laser Surface Treatment ◽

Coating Quality ◽

Porosity Level ◽

Plasma Sprayed

Advanced ceramics are not easily fabricated and consolidated by the plasma spray technique because of their extremely high melting temperature. Zirconium diboride (ZrB2) has been successfully plasma sprayed, but the coatings are quite porous. The high levels of porosity are usually a result of unmelted ZrB2 particles that have been incorporated into the coating during deposition. Applying a laser surface treatment to reduce both the porosity and the coating surface roughness, and to improve the coating quality, is of great interest. A laser based surface treatment technique provides a well-controlled heat input, with minimal or no distortion. In this study, a two dimensional mathematical model is developed to investigate the effects of laser power, beam diameter and level of porosity on the coating quality, incorporating melting, solidification, and evaporation phenomena. A continuum model is used to solve Navier-Stokes equations for both solid and liquid phases. Volume-of-Fluid (VOF) is incorporated to track the free surface. The surface force is incorporated as a body force instead of a boundary condition. The porosity level and surface roughness before and after the laser surface treatment are simulated and compared with experimental results.

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