Knowledge Management System of Institue of Mechanics, CAS
| Nonequilibrium microstructures and phase evolutions of an iron-based laser clad coating | |
Wu XL(武晓雷) ; Chen GN(陈光南); Wu, XL (reprint author), Chinese Acad Sci, Inst Mech, Lab Nonlinear Mech Continuous Media, Beijing 100080, Peoples R China.
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| Source Publication | Journal of Materials Science & Technology
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| 1999 | |
| Volume | 15Issue:6Pages:541-547 |
| ISSN | 1005-0302 |
| Abstract | The microstructural and compositional features of the laser-solidified microstructures and phase evolutions occurring during high temperature tempering were investigated by using analytical electron microscopy with energy dispersive X-ray analysis. The cladded alloy, a powder mixture of Fe, Cr, W, Ni and C with a weight ratio of 10:5:1:1:1, was processed with a 3 kW continuous wave CO2 laser. The cladded coating possessed the hypoeutectic microstructure of the primary dendritic gamma-austenite and interdendritic eutectic consisting of (gamma+M7C3). The gamma-austenite is a nonequilibrium phase with extended solid solution of alloying elements. And, a great deal of fine structures, i.e., a high density of dislocations, twins, and stacking faults existed in austenite phase. During high temperature aging, the precipitation of M23C6, MC and M2C in austenite and in situ transformation of M7C3(+gamma) --> M23C6 and M7C3+gamma --> M6C occurred. The laser clad coating revealed an evident secondary hardening and superior impact wear resistance. |
| Subject Area | 力学 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000083883100009 |
| WOS Keyword | TOOL STEELS ; MO-C ; SOLIDIFICATION ; ALLOYS |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/17670 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Wu, XL (reprint author), Chinese Acad Sci, Inst Mech, Lab Nonlinear Mech Continuous Media, Beijing 100080, Peoples R China. |
| Recommended Citation GB/T 7714 | Wu XL,Chen GN,Wu, XL . Nonequilibrium microstructures and phase evolutions of an iron-based laser clad coating[J]. Journal of Materials Science & Technology,1999,15,6,:541-547. |
| APA | 武晓雷,陈光南,&Wu, XL .(1999).Nonequilibrium microstructures and phase evolutions of an iron-based laser clad coating.Journal of Materials Science & Technology,15(6),541-547. |
| MLA | 武晓雷,et al."Nonequilibrium microstructures and phase evolutions of an iron-based laser clad coating".Journal of Materials Science & Technology 15.6(1999):541-547. |
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