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

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Acta Metallurgica Sinica(English Letters) 2015年第4期28卷 414-423页

作者： Wen-Qin Wang Tomiko Yamaguchi Kazumasa Nishio Faculty of Engineering Kyushu Institute of Technology Nishinippon Institute of Technology

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 FeAl3. 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 FeAl3 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.

关键词： Resistance seam welding A6061 WC cladding layer Wear resistance

A COMPREHENSIVE MODEL OF LASER cladding BY POWDER FEEDING

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Acta Metallurgica Sinica(English Letters) 2004年第1期17卷 21-27页

作者： Y.L.Huang G.Y.Liang J.Y.Su School of Materials Science and Engineering Xi'an Jiaotong University Xi'an 710049 ChinaSchool of Materials Science and Engineering Xi'an Jiaotong University Xi'an 710049 ChinaSchool of Materials Science and Engineering Xi'an Jiaotong University Xi'an 710049 China

A novel model was presented to predict the evolutionary development of cladding layer, and a method based on Lambert-Beer theorem and Mie's theory was adopted to treat the interaction between powder stream and laser beam. By using the continuum model and enthalpy-porosity method, the fluid flow and heat transfer in solid-liquid phase change system were simulated. The commercial software PHOENICS, to which several modules were appended, was used to accomplish the simulation. Numerical computation was performed for Stellite 6 cladding on steel, the obtained results are coincident with those measured in experiment basically.

关键词： laser cladding powder feeding cladding layer interaction

Laser glazing study of Co-based alloy and Ni-Nb-Cr alloy coating

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Chinese Journal of Lasers 1994年第4期B3卷 377-384页

作者： TIAN Nailiang(Department of Applied Physics,Tianjin Institute of Science and Technology, Tianjin 300191,China)YANG Yongqiang(Department of Mechanics, Tianjin Institute of Textile Science and Technology,Tianjin 300160, China) Tianjin Inst of Science and Technology Tianjin China

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关键词： Metallic glass cladding layer Co-based

Failure Characteristic of Laser cladding Samples on Repeated Impact

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International Journal of Plant Engineering and Management 2004年第2期9卷 79-84页

作者： SHIShi-hong ZHENGQi-guang FUGe-yan ZHANGJin-ping NationalLaboratoryofLaserTechnology HuazhongUniversityofScienceandTechnologyWuhan430074P.R.China SchoolofMechanicalandElectronicEngineering SoochowUniversitySuzhou215021P.R.China

Using self-made impact fatigue test instruments and related analytic devices,the mechanical components with laser cladding layer have been attempted. It is found that, onrepeated impact force, several failure modes of the components include the surface cracks, surfaceplastic deformation, corrosive pitting and coat collapse, etc. The paper reported the test methodand initial analysis conclusions about the unique failure characteristics of the mechanicalcomponents on repeated impact load.

关键词： cladding layer repeated impact failure characteristic