Research on laser welding of cast Ni-based superalloy K418 turbo disk and alloy steel 42CrMo shaft
文献类型：期刊论文
| 作者 | 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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| 刊名 | Journal of Alloys and Compounds
 |
| 出版日期 | 2008 |
| 卷号 | 453期号:1-2页码:371-378 |
| 通讯作者邮箱 | gyu@imech.ac.cn |
| 关键词 | Laser Welding Welded Seam Microstructure Mechanical Properties Nd-Yag Laser Tensile Properties Microstructure Aluminum |
| ISSN号 | 0925-8388 |
| 通讯作者 | Yu G |
| 合作状况 | 国内 |
| 中文摘要 | 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. |
| 类目[WOS] | Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | ND-YAG LASER; TENSILE PROPERTIES; MICROSTRUCTURE; ALUMINUM |
| 收录类别 | SCI ; EI |
| 原文出处 | http://dx.doi.org/10.1016/j.jallcom.2006.11.152 |
| 语种 | 英语 |
| WOS记录号 | WOS:000254899700067 |
| 公开日期 | 2009-08-03 ; 2009-09-14 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/26074]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 通讯作者 | Yu G |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：力学研究所
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