Microstructural evolution and wear behaviors of laser cladding Ti 2 Ni/α(Ti) dual-phase coating reinforced by TiB and TiC

Sheng, Rui; Li, J.; Shao, J.Z.; Bai, L.L.; Chen, J.L.; Qu, C.C.

doi:10.1016/j.apsusc.2015.07.131

Cited by 51 publications

(11 citation statements)

References 33 publications

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“…A variable laser output power ranging from 600 to 1000 W was used with two corresponding different scanning speeds of 25 and 50 cm·min −1 , as presented in Table 2 . This range of heat input adopted was intended to only melt the NiCrBSi matrix powder without melting the WC particles and to avoid the high percentage of dilution ratio [ 11 , 25 , 27 ].…”

Section: Methodsmentioning

confidence: 99%

“…In general, the cladding material develops from single ceramic or alloy to multiple ceramics or alloys, although single metals or alloys are rarely used in laser cladding nowadays. Apart from pure metal powders, alloys such as Ni-based, Fe-based, and Co-based alloys are prevalent in laser cladding, especially Ni-based alloys, which exhibit better high-temperature, wear and corrosion resistance properties, and easily bond to the substrate [ 11 , 12 , 13 ]. One of the most commonly used coating techniques in laser cladding on titanium alloys is the metal matrix composites (MMCs) material (ceramics and metals or alloys) [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

“…The conclusion indicated that the laser cladding with 70 wt % of carbide content displays more cracks and higher hardness compared to that 50 wt % of carbide content. Pure nickel with ceramic phase of B 4 C [ 11 ] and TiB 2 ceramic phase mixed with pure Ti [ 24 ] was investigated as well. WC as a reinforcement ceramic was used with different binding metals based alloy such as Mo [ 25 ], Co [ 26 ] and Ti [ 18 ] and it resulted in enhancing the hardness and abrasion resistance of the substrate.…”

Section: Introductionmentioning

confidence: 99%

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Laser Powder Cladding of Ti-6Al-4V α/β Alloy

et al. 2017

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Laser cladding process was performed on a commercial Ti-6Al-4V (α + β) titanium alloy by means of tungsten carbide-nickel based alloy powder blend. Nd:YAG laser with a 2.2-KW continuous wave was used with coaxial jet nozzle coupled with a standard powder feeding system. Four-track deposition of a blended powder consisting of 60 wt % tungsten carbide (WC) and 40 wt % NiCrBSi was successfully made on the alloy. The high content of the hard WC particles is intended to enhance the abrasion resistance of the titanium alloy. The goal was to create a uniform distribution of hard WC particles that is crack-free and nonporous to enhance the wear resistance of such alloy. This was achieved by changing the laser cladding parameters to reach the optimum conditions for favorable mechanical properties. The laser cladding samples were subjected to thorough microstructure examinations, microhardness and abrasion tests. Phase identification was obtained by X-ray diffraction (XRD). The obtained results revealed that the best clad layers were achieved at a specific heat input value of 59.5 J·mm−2. An increase by more than three folds in the microhardness values of the clad layers was achieved and the wear resistance was improved by values reaching 400 times.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Laser Powder Cladding of Ti-6Al-4V α/β Alloy

et al. 2017

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“…Laser surface alloying (LSA) and laser cladding are important technologies, widely used to improve surface properties of Al alloys [2,[7][8][9][10][11][12][13][14][15], titanium alloys [16][17][18][19], magnesium alloys [20,21], copper alloys [22], nickel-copper alloys [23,24] and stainless steels [25][26][27]. However, with LSA process the selection of the alloying elements, compositional ratio and elemental surface distribution is crucial since it has a paramount effect towards microstructural development in the alloyed layer [28].…”

Section: Introductionmentioning

confidence: 99%

Energy Density Effect of Laser Alloyed TiB2/TiC/Al Composite Coatings on LMZ/HAZ, Mechanical and Corrosion Properties

Ravnikar

Trdan

Nagode

et al. 2020

Metals

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In the present work, TiC/TiB2/Al composite coatings were synthesized onto a precipitation hardened AlSi1MgMn alloy by laser surface alloying (LSA), using 13.3 J/mm2 and 20 J/mm2 laser energy densities. Microstructure evaluation, microhardness, wear and corrosion performance were investigated and compared with the untreated/substrate Al alloy sample. The results confirmed sound, compact, crackles composite coating of low porosity, with a proper surface/substrate interface. Microstructural analyses revealed the formation of extremely fine nano-precipitates, ranging from of 50–250 nm in the laser melted (LMZ) and large precipitates, accompanied with grain coarsening in the heat-affected zone (HAZ), due to the substrate overheating during the LSA process. Nonetheless, both coatings achieved higher microhardness, with almost 7-times higher wear resistance than the untreated sample as a consequence of high fraction volume of hard, wear resistant TiB2 and TiC phases inside the composite coatings. Further, cyclic polarization results in 0.5 M NaCl aqueous solution confirmed general improvement of corrosion resistance after LSA processed samples, with reduced corrosion current by more than a factor of 9, enhanced passivation/repassivation ability and complete prohibition of crystallographic pitting, which was detected with the untreated Al alloy.

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“…Weng et al [ 10 ] obtained in situ formed Ti 5 Si 3 –TiC/Co-based composite coatings using SiC + Co42 alloy powders by the laser cladding process, and the anti-wear properties of the coatings were 18.4~57.4 times higher than that of the titanium alloys. In addition, TiB–TiC/Ti 2 Ni-α(Ti) [ 11 ] and WC/Ni [ 12 ] coatings with better wear-resistance than the titanium alloys were also investigated.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mo on Microstructures and Wear Properties of In Situ Synthesized Ti(C,N)/Ni-Based Composite Coatings by Laser Cladding

Chen

Wang

et al. 2017

Materials

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Using Ni60 alloy, C, TiN and Mo mixed powders as the precursor materials, in situ synthesized Ti(C,N) particles reinforcing Ni-based composite coatings are produced on Ti6Al4V alloys by laser cladding. Phase constituents, microstructures and wear properties of the composite coatings with 0 wt % Mo, 4 wt % Mo and 8 wt % Mo additions are studied comparatively. Results indicate that Ti(C,N) is formed by the in situ metallurgical reaction, the (Ti,Mo)(C,N) rim phase surrounding the Ti(C,N) ceramic particle is synthesized with the addition of Mo, and the increase of Mo content is beneficial to improve the wear properties of the cladding coatings. Because of the effect of Mo, the grains are remarkably refined and a unique core-rim structure that is uniformly dispersed in the matrix appears; meanwhile, the composite coatings with Mo addition exhibit high hardness and excellent wear resistance due to the comprehensive action of dispersion strengthening, fine grain strengthening and solid solution strengthening.

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Microstructural evolution and wear behaviors of laser cladding Ti 2 Ni/α(Ti) dual-phase coating reinforced by TiB and TiC

Cited by 51 publications

References 33 publications

Laser Powder Cladding of Ti-6Al-4V α/β Alloy

Laser Powder Cladding of Ti-6Al-4V α/β Alloy

Energy Density Effect of Laser Alloyed TiB2/TiC/Al Composite Coatings on LMZ/HAZ, Mechanical and Corrosion Properties

Effect of Mo on Microstructures and Wear Properties of In Situ Synthesized Ti(C,N)/Ni-Based Composite Coatings by Laser Cladding

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