A comparison of the abrasive wear behaviour of iron-chromium based hardfaced coatings deposited by SMAW and electric arc spraying

Buchanan, Vernon E.; McCartney, D.G.; Shipway, P.H.

doi:10.1016/j.wear.2007.04.008

Cited by 67 publications

(35 citation statements)

References 12 publications

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“…On the surfaces of hypoeutectic alloy, cutting and grooves generated by plastic deformation were observed. Besides cutting and plastic deformation, carbides detachment was also observed on hypereutectic alloys, similar to the one reported in previous studies [10] for deposits with high chromium content. …”

Section: Scanning Electron Microscopysupporting

confidence: 89%

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Wear and Grip Loss Evaluation of High Chromium Welding Deposits Applied on Sugar Cane Rolls1

Millán

Castro

Casanova

2015

IyU

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Wear on sugar cane rolls is an expensive maintenance problem for the sugar cane industry. Wear produces loss of sucrose extraction and loss of grip of the roll on the bagasse. This paper presents the evaluation of wear and loss of grip of hypoeutectic and hypereutectic high chromium welding deposits applied on ASTM A-36 steel and gray cast iron. A modified ASTM G-65 standard test was used. Wear was produced by the abrasive action of wet bagasse with three levels of mineral extraneous matter. Silica grains with sizes in the range of 0.212-0.300 mm (AFS 50/70) were used as mineral extraneous matter. Grip was evaluated by measuring the torque on the power transmission shaft that moves the specimens. Worn surfaces were characterized by using scanning electron microscopy. Wear was found to increase proportionally related to the mineral extraneous matter content. Geometric changes of the weld deposits related to wear caused grip loss. For low mineral extraneous matter level, wear resistance of carbon steel was greater than that of gray cast iron; whereas the opposite was found for high mineral extraneous matter level.

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Section: Scanning Electron Microscopysupporting

confidence: 89%

“…Other works, regarding different items besides the microstructure, have evaluated the wear resistance of these alloys [2], [10]- [12]. However, to the best of our knowledge, the effect of the wear on the grip has not been evaluated.…”

Section: Introductionmentioning

confidence: 99%

Wear and Grip Loss Evaluation of High Chromium Welding Deposits Applied on Sugar Cane Rolls1

Millán

Castro

Casanova

2015

IyU

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“…Coatings that have chromium resisted abrasive wear better, since they formed chromium carbides that are more resistant than the iron carbides; in addition, the more complex the chromium carbide and the better the morphological distribution of these carbides, the better the behavior against abrasive wear. The precipitation of carbides in steel depends on the amount of chromium and carbon; when the ratio is lower than 3:1, the formed carbide is cementite alloyed, but if the ratio is higher than 3:1, chromium carbides are formed as Cr 7 C 3 and Cr 23 C 6 [6]. Thus, a hardness test cannot fully evaluate the behavior against abrasive wear, since the relationship between microstructure and wear is very complex and is not fully understood.…”

Section: Methodsmentioning

confidence: 99%

“…In many cases, an increase in the material's hardness entails better abrasive wear resistance; this correlation takes place when the presence of carbides is neglected. Other variables that affect abrasive wear resistance are carbides morphology, matrix nature, and mechanisms of material elimination [6,7]. Hard coatings and maintenance welding allow better and longer performances and fewer failures.…”

Section: Introductionmentioning

confidence: 99%

Analysis of abrasive wear performance of arc welded hard layers

Jankauskas¹,

Kreivaitis²,

Milčius

et al. 2008

Wear

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“…The characteristics of PTA coatings that contribute to their superior performance include their low dilution with the substrate and fine microstructures. The latter has been explained when comparing coatings processed with other hardfacing processes due to the faster solidification rates imposed by PTA and therefore finer microstructures formed due to a faster growth rate [1][2][3][4] . However, a more accurate correlation had to involve deposition procedures with similar heat input as suggested in a previous work on the characterization of PTA coatings processed with a wire and an atomized feedstock alloy 5,6 .…”

Section: Introductionmentioning

confidence: 99%

Effect of current and atomized grain size distribution on the solidification of Plasma Transferred Arc coatings

Bond

D'Oliveira

2012

Mat. Res.

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Plasma Transferred Arc (PTA) is the only thermal spray process that results in a metallurgical bond, being frequently described as a hardfacing process. The superior properties of coatings have been related to the fine microstructures obtained, which are finer than those processed under similar heat input with welding techniques using wire feedstock. This observation suggests that the atomized feedstock plays a role on the solidification of coatings. In this study a model for the role of the powders grains in the solidification of PTA coatings is put forward and discussed. An experiment was setup to discuss the model which involved the deposition of an atomized Co-based alloy with different grain size distributions and deposition currents. X-ray diffraction showed that there were no phase changes due to the processing parameters. Microstructure analysis by Laser Confocal Microscopy, dilution with the substrate steel and Vickers microhardness were used the characterized coatings and enriched the discussion confirming the role of the powdered feedstock on the solidification of coatings.

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A comparison of the abrasive wear behaviour of iron-chromium based hardfaced coatings deposited by SMAW and electric arc spraying

Cited by 67 publications

References 12 publications

Wear and Grip Loss Evaluation of High Chromium Welding Deposits Applied on Sugar Cane Rolls1

Wear and Grip Loss Evaluation of High Chromium Welding Deposits Applied on Sugar Cane Rolls1

Analysis of abrasive wear performance of arc welded hard layers

Effect of current and atomized grain size distribution on the solidification of Plasma Transferred Arc coatings

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