Knowledge Management System of Institue of Mechanics, CAS
| Research on laser welding of cast Ni-based superalloy K418 turbo disk and alloy steel 42CrMo shaft | |
Liu XB(刘秀波) ; Yu G(虞钢); Guo J(郭建); Gu YJ(谷亦杰); Pang M(庞铭); Zheng CY(郑彩云); Wang HH(王恒海); Yu G
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| Source Publication | Journal of Alloys and Compounds
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| 2008 | |
| Volume | 453Issue:1-2Pages:371-378 |
| ISSN | 0925-8388 |
| Abstract | Exploratory experiments of laser welding cast Ni-based superalloy K418 turbo disk and alloy steel 42CrMo shaft were conducted. Microstructure of the welded seam was characterized by optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive spectrometer (EDS). Mechanical properties of the welded seam were evaluated by microhardness and tensile strength testing. The corresponding mechanisms were discussed in detail. Results showed that the laser-welded seam had non-equilibrium solidified microstructures consisting of FeCr0.29Ni0.16C0.06 austenite solid solution dendrites as the dominant and some fine and dispersed Ni3Al gamma' phase and Laves particles as well as little amount of MC short stick or particle-like carbides distributed in the interdendritic regions. The average microhardness of the welded seam was relatively uniform and lower than that of the base metal due to partial dissolution and suppression of the strengthening phase gamma' to some extent. About 88.5% tensile strength of the base metal was achieved in the welded joint because of a non-full penetration welding and the fracture mechanism was a mixture of ductility and brittleness. The existence of some Laves particles in the welded seam also facilitated the initiation and propagation of the microcracks and microvoids and hence, the detrimental effects of the tensile strength of the welded joint. The present results stimulate further investigation on this field. (c) 2006 Elsevier B.V. All rights reserved. |
| Keyword | Laser Welding Welded Seam Microstructure Mechanical Properties Nd-yag Laser Tensile Properties Microstructure Aluminum |
| DOI | 10.1016/j.jallcom.2006.11.152 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000254899700067 |
| WOS Keyword | ND-YAG LASER; TENSILE PROPERTIES; MICROSTRUCTURE; ALUMINUM |
| WOS Subject | Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/26074 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Yu G |
| Recommended Citation GB/T 7714 | Liu XB,Yu G,Guo J,et al. Research on laser welding of cast Ni-based superalloy K418 turbo disk and alloy steel 42CrMo shaft[J]. Journal of Alloys and Compounds,2008,453,1-2,:371-378. |
| APA | Liu XB.,Yu G.,Guo J.,Gu YJ.,Pang M.,...&Yu G.(2008).Research on laser welding of cast Ni-based superalloy K418 turbo disk and alloy steel 42CrMo shaft.Journal of Alloys and Compounds,453(1-2),371-378. |
| MLA | Liu XB,et al."Research on laser welding of cast Ni-based superalloy K418 turbo disk and alloy steel 42CrMo shaft".Journal of Alloys and Compounds 453.1-2(2008):371-378. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp247.pdf（1285KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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