In-Situ Synthesis of Ceramic Particle Reinforced Co-Based Alloy Composite Coating by Laser Cladding

Weiping, 张维平 Zhang; Haibo, 马海波 Ma; Tianyun, 陈天运 Chen; Zhihua, 郎志华 Lang

doi:10.3788/cjl20093612.3277

Cited by 2 publications

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“…For the good high-temperature properties and good corrosion resistance of the Co-based alloys [12,13], Co-based alloy clad layer was synthesized with premixed high purity Co-based alloy powders on a 316 stainless steel by laser cladding in this paper. And the microstructure, chemical composition, phase composition and the microhardness of the clad layer were investigated.…”

Section: Introductionmentioning

confidence: 99%

Laser Cladding of Co-Based Alloy on 316 Stainless Steel

Zhang

Liu

et al. 2014

AMR

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316 stainless steel was surface cladded with Co-based alloy using a high power semiconductor laser system. Microstructure, chemical composition, constituent phases and microhardness of the clad coating were investigated with SEM, EDS, XRD and Vickers hardness tester, respectively. The experimental results show that the microstructure of the layer is dense, no voids, cracks or other defects appearing and metallurgical bond between coating and substrate is perfect, The clad layer was mainly consisted of a fine dendritic structure, the constituent phases of the clad layer are mainly composed of γ-Co, (Cr,Mo)23C6 and Cr7C3, the microhardness of clad layer reaches about 720HV, which is about 3 times larger than that of the 316 stainless steel substrate.

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Section: Introductionmentioning

confidence: 99%

Laser Cladding of Co-Based Alloy on 316 Stainless Steel

Zhang

Liu

et al. 2014

AMR

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“…Many studies about laser cladding Co-based alloys were reported at present, and coatings by laser cladding with good resistance to wear, elevated-temperature and corrosion were also widely reported [8][9][10][11]. Mingxi LI studied the Co-based alloy laser cladded coating with different concentrations of Mo, and discussed the effect of Mo on microstructure and resistance to wear of the laser cladded coating [9].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Laser Cladding Co-Based Alloy Coatings

Cheng

Fang

Dai

et al. 2011

AMR

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The Co-based alloy coatings were successfully fabricated on H13 steel by Nd:YAG and CO2laser. The microstructure and properties of the laser cladded coatings were compared and analyzed by SEM, EDS, XRD and microhardness tester. The results show that the excellent metallurgical bonding has formed at the interface between substrate and laser cladded coatings. Cellular crystal at the bonding zone, cellular dendrite at the central zone and reticular equiaxed crystal near top surface were observed in Nd:YAG laser cladded coating, while the typically hypoeutectic character was found in CO2laser cladded coating. Phase constituents of both coatings are mainly composed of Cr23C6, Co3Mo2Si, MoC, FeCr and γ-Co. The microhardness of H13 steel is greatly improved by laser cladding, however the microhardness of the CO2laser cladded coating is even higher than the Nd:YAG laser cladded coating.

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In-Situ Synthesis of Ceramic Particle Reinforced Co-Based Alloy Composite Coating by Laser Cladding

Cited by 2 publications

References 0 publications

Laser Cladding of Co-Based Alloy on 316 Stainless Steel

Laser Cladding of Co-Based Alloy on 316 Stainless Steel

Microstructure and Properties of Laser Cladding Co-Based Alloy Coatings

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