Laser surface alloying of aluminium with WC+Co+NiCr for improved wear resistance

Nath, Subhasisa; Pityana, Sisa; Majumdar, Jyotsna Dutta

doi:10.1016/j.surfcoat.2012.01.038

Cited by 64 publications

(26 citation statements)

References 22 publications

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“…Moreover, the improvement of the wear resistance could be attributed to the following reasons: (1) The WC particles with high hardness acted as reinforcement against the abrasive SiO 2 particles and protected the cladding layer from wear damage. (2) The formation of the FeAl 3 was beneficial in reducing the wear damage. (3) The SHA particles played a role as binder material to balance the molting point and resistance between A6061 and WC to guarantee the formation of the cladding layer and acted as another reinforcement to improve the wear resistance.…”

Section: Study Of Worn Surfacementioning

confidence: 99%

“…However, the surface properties of the aluminum alloys, the wear resistance in particular, are not qualified for recent requirements [1]. Laser surface alloy technology [2][3][4] is a most widely used method for the surface modification of aluminum and its alloys. This technique could produce good wear-resistant layers in the order of millimeters within short time by using high energy density heat source.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Wear Behavior of Cermet/Iron Alloy Cladding Layers on A6061 Alloy Coated by Resistance Seam Welding Method

Wang

Yamaguchi

Nishio

2015

Acta Metall. Sin. (Engl. Lett.)

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Cermet/iron alloy cladding layers were coated on the surface of Al-Mg-Si alloy (A6061) plates by resistance seam welding method with tungsten carbide (WC) and high-carbon iron alloy (SHA) powders. The cladding layer consisted of WC reinforcement, SHA binder, A6061 and FeAl 3 . The effect of WC ratio (30 wt%, 50 wt% and 70 wt%) on the microstructure and wear behavior of the cladding layers was investigated in detail. Abrasive wear test was performed under two kinds of load condition by using a rubber wheel apparatus to evaluate wear resistance. The results showed that the wear resistance of the cladding layer was improved by 3.5-5 times than that of the substrate. At lower load, the wear resistances of the samples 30% and 70% WC were nearly the same, which suggested that FeAl 3 played an important role in improvement of the wear resistance instead of WC. While at higher load, the amount of WC determined the wear resistance of the cladding layer. Furthermore, wear behavior of these cladding layers was explained with reference to the observed microstructure of the worn surface.

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Section: Study Of Worn Surfacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructure and Wear Behavior of Cermet/Iron Alloy Cladding Layers on A6061 Alloy Coated by Resistance Seam Welding Method

Wang

Yamaguchi

Nishio

2015

Acta Metall. Sin. (Engl. Lett.)

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show abstract

“…Many methods including the optimization of process parameters [11], preheating [12] and postheat treatments [13], adding the alloying powders [14][15][16][17] have been carried out to reduce cracking susceptibility of the laser cladding coating. In comparison, adding the alloying powders (mainly metallic oxides or pure metals) is a flexible and effective way.…”

Section: Introductionmentioning

confidence: 99%

Effect of NiCrBSi content on microstructural evolution, cracking susceptibility and wear behaviors of laser cladding WC/Ni–NiCrBSi composite coatings

Luo

2015

Journal of Alloys and Compounds

114

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“…Liquid phase surface engineering by means of laser beams, including surface melting, alloying, and cladding, is an appropriate and promising method for improving hardness, corrosion, and wear resistance of aluminum alloys [1][2][3][4][5][6][7]. In laser surface alloying, alloying elements are pre-or co-depositionally added to the surface-melted layer.…”

Section: Introductionmentioning

confidence: 99%

Effect of pulsed Nd:YAG laser re-melting on chromium surface alloyed AA6061-T6 aluminum

Ansari

Sohi

Soltani

et al. 2015

Int J Adv Manuf Technol

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In this work, in situ formation of Al-Cr intermetallic compound on the surface of AA6061-T6 aluminum pre-placed chromium powder via pulsed Nd:YAG laser surface alloying was investigated. The effect of laser re-melting on microstructure and hardness of the treated layers was examined. Laser re-melting resulted in a significant reduction in the presence of cracks, pores, and undissolved Cr-rich particles along with a more uniform distribution of intermetallic compounds. The results showed that the alloyed layers mainly consisted of fine Al 7 Cr and Al 4 Cr intermetallic compounds in an α-Al solid solution matrix with cellular and dendritic morphologies. Hardness profiles along cross section and top surface of the alloyed layers indicated that laser re-melting enhanced homogeneity and increased the hardness value to more than six times of that of the base material.

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Laser surface alloying of aluminium with WC+Co+NiCr for improved wear resistance

Cited by 64 publications

References 22 publications

Microstructure and Wear Behavior of Cermet/Iron Alloy Cladding Layers on A6061 Alloy Coated by Resistance Seam Welding Method

Microstructure and Wear Behavior of Cermet/Iron Alloy Cladding Layers on A6061 Alloy Coated by Resistance Seam Welding Method

Effect of NiCrBSi content on microstructural evolution, cracking susceptibility and wear behaviors of laser cladding WC/Ni–NiCrBSi composite coatings

Effect of pulsed Nd:YAG laser re-melting on chromium surface alloyed AA6061-T6 aluminum

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