Knowledge Management System of Institue of Mechanics, CAS
| Microstructure Study Of Laser Welding Cast Nickel-Based Superalloy K418 | |
Pang M(庞铭) ; Yu G(虞钢); Wang HH(王恒海); Zheng CY(郑彩云); Yu, G (reprint author), Chinese Acad Sci, Inst Mech, Lab Laser Intelligent Mfg, 15 Beisihuanxi Rd, Beijing 100080, Peoples R China.
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| Source Publication | Journal of Materials Processing Technology
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| 2008 | |
| Volume | 207Issue:1-3Pages:271-275 |
| ISSN | 0924-0136 |
| Abstract | Experiments of laser welding cast nickel-based superalloy K418 were conducted. Microstructure of the welded seam was characterized by optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive spectrometer (EDS). Mechanical properties of the welded seam were evaluated by microhardness. The corresponding mechanisms were discussed in detail. Results show that the laser welded seam have non-equilibrium solidified microstructures consisting of Cr-Ni-Fe-C austenite solid solution dendrites as the dominant and some fine and dispersed Ni-3(Al,Ti) gamma' phase as well as little amount of MC needle carbides and particles enriched in Nb, Ti and Mo distributed in the interdendritic regions, cracks originated from the liquation of the low melting points eutectics in the HAZ grain boundary are observed, the average microhardness of the welded seam and HAZ is higher than that of the base metal due to alloy elements' redistribution of the strengthening phase gamma'. (C) 2008 Elsevier B.V. All rights reserved. |
| Keyword | Nickel-based Superalloy Needle Carbides Cracks Aluminum |
| DOI | 10.1016/j.jmatprotec.2007.12.091 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000259786200033 |
| WOS Keyword | ALUMINUM |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Industrial ; Engineering, Manufacturing ; Materials Science, Multidisciplinary |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/25886 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Yu, G (reprint author), Chinese Acad Sci, Inst Mech, Lab Laser Intelligent Mfg, 15 Beisihuanxi Rd, Beijing 100080, Peoples R China. |
| Recommended Citation GB/T 7714 | Pang M,Yu G,Wang HH,et al. Microstructure Study Of Laser Welding Cast Nickel-Based Superalloy K418[J]. Journal of Materials Processing Technology,2008,207,1-3,:271-275. |
| APA | Pang M,Yu G,Wang HH,Zheng CY,&Yu, G .(2008).Microstructure Study Of Laser Welding Cast Nickel-Based Superalloy K418.Journal of Materials Processing Technology,207(1-3),271-275. |
| MLA | Pang M,et al."Microstructure Study Of Laser Welding Cast Nickel-Based Superalloy K418".Journal of Materials Processing Technology 207.1-3(2008):271-275. |
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