|
|||||
|
|
| Microstructure and Wear Resistance of Laser Clad Cobalt-Based Alloy／SiCp Composite Coating | |
| 引用本文： | LIMing-xi SISong-hua HEYi-zhu SUNGuo-xiong. Microstructure and Wear Resistance of Laser Clad Cobalt-Based Alloy／SiCp Composite Coating[J]. 钢铁研究学报(英文版), 2004, 11(4): 59-62 |
| 作者姓名： | LIMing-xi SISong-hua HEYi-zhu SUNGuo-xiong |
| 作者单位： | [1]AnhuiUniversityofTechnology,Ma＇anshan243002,China [2]SoutheastUniversity,Nanjing210096,China |
| 基金项目： | ItemSponsoredbyInternationalGovernmentCooperationProjectsofSino Korea ( 2 0 0 2 0 0 9)andSino America ( 0 10 880 13 ) |
| 摘 要： | The SiCp (20%) reinforced cobalt-based alloy composite coatings deposited by lasercladding on IF steel were introduced. The microstructure across the whole section of such coat-ings was examined using optical microscope, scanning electron microscope (SEM) and X-raydiffractometer (XRD), and the wear resistance of the coatings was measured by MM-200 typewear testing machine. The results show that the SiCp is completely dissolved during laser clad-ding and the primary phase in the coatings is r-Co. The other phases, such as SizW, CoWSi,Cr3Si and CoSi2, are formed by carbon, silicon reacting with other elements existing in themelting pool. There are various crystallization morphologies in different zones, such as planarcrystallization at the interface, followed by cellular and dendrite crystallization from interface tothe surface. The direction of solidification changes from one direction perpendicular to interfaceto multi-directions at the central and upper regions of the clad. The wear resistance of the cladis improved by adding SiCp. |
| 关 键 词： | 钴基合金／碳化硅 复合材料 显微结构 磨损抗力 激光熔覆 SEM XRD |
Microstructure and Wear Resistance of Laser Clad Cobalt-Based Alloy/SiCp Composite Coating |
|
| LI Ming-xi,SI Song-hua,HE Yi-zhu,SUN Guo-xiong. Microstructure and Wear Resistance of Laser Clad Cobalt-Based Alloy/SiCp Composite Coating[J]. Journal of Iron and Steel Research, 2004, 11(4): 59-62 | |
| Authors: | LI Ming-xi SI Song-hua HE Yi-zhu SUN Guo-xiong |
| Affiliation: | 1. Anhui University of Technology, Ma′anshan 243002, China;Southeast University, Nanjing 210096, China 2. Anhui University of Technology, Ma′anshan 243002, China 3. Southeast University, Nanjing 210096, China |
| Abstract: | The SiCp (20 %) reinforced cobalt-based alloy composite coatings deposited by laser cladding on IF steel were introduced. The microstructure across the whole section of such coatings was examined using optical microscope, scanning electron microscope (SEM) and X-ray diffractometer (XRD), and the wear resistance of the coatings was measured by MM-200 type wear testing machine. The results show that the SiCp is completely dissolved during laser cladding and the primary phase in the coatings is γ-Co. The other phases, such as Si2W, CoWSi, Cr3Si and CoSi2, are formed by carbon, silicon reacting with other elements existing in the melting pool. There are various crystallization morphologies in different zones, such as planar crystallization at the interface, followed by cellular and dendrite crystallization from interface to the surface. The direction of solidification changes from one direction perpendicular to interface to multi-directions at the central and upper regions of the clad. The wear resistance of the clad is improved by adding SiCp. |
| Keywords: | composite coating IF steel laser cladding SiC p microstructure wear resistance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |