Microstructure and wear resistance of WC–Co by three consolidation processing techniques

Picas, Josep A.; Xiong, You; Punset, Miquel; Ajdelsztajn, L.; Forn, Antonio; Schoenung, Julie M.

doi:10.1016/j.ijrmhm.2008.07.002

Cited by 65 publications

(21 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The WC-Co-Cr coatings have been employed to improve the wear resistance and corrosion properties [9,10]. * corresponding author; e-mail: yyarali@sakarya.edu.tr WC-Co-Cr coatings derive its wear resistant properties from the presence of high volume fraction of hard, wear resistant WC grains in a Co-based metallic binder phase.…”

Section: Introductionmentioning

confidence: 99%

The Surface Properties of WC-Co-Cr Based Coatings Deposited by High Velocity Oxygen Fuel Spraying

2017

View full text Add to dashboard Cite

The aim of this research was to investigate microstructural and mechanical properties of the WC-Co-Cr coatings by high velocity oxygen fuel spraying. Woka 3653 (WC10Co4Cr) powder was used as coating material. This powder is widely used as a tribological coating material providing a combination of high toughness, high hardness, and good strength. The coatings were produced for the different high velocity oxygen fuel spraying parameters. The treated samples were characterized by using scanning electron microscopy/energy dispersive X-ray spectrometry and X-ray diffractometry. Microhardness measurements were executed to evaluate the mechanical properties of the coatings. Also the wear performance of the coatings was investigated. The scanning electron microscopy and energy dispersive X-ray spectrometry analyses were applied to worn surfaces. The results indicated that the coating shows slightly higher microhardness and better abrasive wear resistance than the conventional counterpart.

show abstract

Section: Introductionmentioning

confidence: 99%

The Surface Properties of WC-Co-Cr Based Coatings Deposited by High Velocity Oxygen Fuel Spraying

2017

View full text Add to dashboard Cite

show abstract

“…Although this method can reduce the energy input, it will not affect the molten pool reaction and cannot improve the part quality. Methodologies that realize energy savings while producing materials with superior properties are critically needed [24].…”

Section: Introductionmentioning

confidence: 99%

Energy Consumption and Saving Analysis for Laser Engineered Net Shaping of Metal Powders

et al. 2016

View full text Add to dashboard Cite

Abstract:With the increasing awareness of environmental protection and sustainable manufacturing, the environmental impact of laser additive manufacturing (LAM) technology has been attracting more and more attention. Aiming to quantitatively analyze the energy consumption and extract possible ways to save energy during the LAM process, this investigation studies the effects of input variables including laser power, scanning speed, and powder feed rate on the overall energy consumption during the laser deposition processes. Considering microhardness as a standard quality, the energy consumption of unit deposition volume (ECUDV, in J/mm 3 ) is proposed as a measure for the average applied energy of the fabricated metal part. The potential energy-saving benefits of the ultrasonic vibration-assisted laser engineering net shaping (LENS) process are also examined in this paper. The experimental results suggest that the theoretical and actual values of the energy consumption present different trends along with the same input variables. It is possible to reduce the energy consumption and, at the same time, maintain a good part quality and the optimal combination of the parameters referring to Inconel 718 as a material is laser power of 300 W, scanning speed of 8.47 mm/s and powder feed rate of 4 rpm. When the geometry shaping and microhardness are selected as evaluating criterions, American Iron and Steel Institute (AISI) 4140 powder will cause the largest energy consumption per unit volume. The ultrasonic vibration-assisted LENS process cannot only improve the clad quality, but can also decrease the energy consumption to a considerable extent.

show abstract

“…However the use of hexavalent chromium [3,4] generates environmentally problems, making the process less attractive. High-velocity oxy fuel (HVOF) process has attracted much attention for coating realization, due to its ability of creating coatings with lower porosity, higher hardness, superior bond strength and less decarburization compared to many of the other thermal spraying methods [5,6]. A wellestablished hard chrome replacement for mechanical components in automotive and aerospace industry is represented by HVOF method, but the application of this process to tooling materials has been limited [7].…”

Section: Introductionmentioning

confidence: 99%

Investigations on Coating of Dies for Advanced Squeeze Casting Process

Peter¹,

Rosso²,

Castella³

2014

Acta Metall Slovaca

View full text Add to dashboard Cite

Premature failure of dies is a critical problem of manufacturers in hot-working processes, e.g. metal die casting, hot extrusion and/or thixoextrusion of aluminium/magnesium or steel. Typically, die material has to be resistant to heat cycling or corrosion environment, to plastic deformation and wear, especially when exposed to high temperature during continuous working cycle. The resistance of dies could be increased by the modification of their surfaces, i.e. by the application of an adequate coating. An improvement of the resistance of H11 steel substrate will be presented and discussed. Here, the coatings will be realized through both by High Velocity Oxy-Fuel coating spray method and by plasma spray method. Firstly, the measurement of the residual stress will be carried out on the un-coated and coated substrate. Secondly, morphological analysis by optical and scanning electron microscopy will be performed on the powders used for the coating and on the coated materials. Such investigations aim finding the most favourable conditions, as concern the materials to be employed for the deposition and the more appropriate deposition techniques, in order to achieve improved properties for the dies which can be used in innovative casting techniques, i.e. squeeze casting and/or some related modified processes. Keywords:Al-based alloys, deposition methods, morphological analysis, residual stress measurment IntroductionDegradation of hot working components is directly correlated to the design, materials employed for the manufacturing as well as the operation history. High reactivity of steel with Al and its alloys as a consequence of the high solubility of Al in α-Fe and of Fe in liquid Al has a strong effect on the dies lifetime. As a result of the repeated contact of the die surface and the casting alloy dies are continuously exposed to erosion and corrosion. Due to different degradation mechanisms attributed to wear, as well as to corrosion-or thermo mechanical fatigue during service, a gradual failure of the die surfaces occurs, reducing the castings quality and the dies duration. The tool materials used for hot-working dies should be resistant to wear, heat cycling and thermal fatigue, plastic deformation and corrosion. In addition, they have to present high hardness, yield strength, creep resistance and toughness at high temperatures. In order to minimize or to avoid the die surface from any negative effects, the dies have to be produced employing an appropriate alloy or by modifying their surfaces through some suitable treatments. Many technological solutions are available today: some of them are related to nitriding

show abstract

Microstructure and wear resistance of WC–Co by three consolidation processing techniques

Cited by 65 publications

References 12 publications

The Surface Properties of WC-Co-Cr Based Coatings Deposited by High Velocity Oxygen Fuel Spraying

The Surface Properties of WC-Co-Cr Based Coatings Deposited by High Velocity Oxygen Fuel Spraying

Energy Consumption and Saving Analysis for Laser Engineered Net Shaping of Metal Powders

Investigations on Coating of Dies for Advanced Squeeze Casting Process

Contact Info

Product

Resources

About