Dissimilar autogenous full penetration welding of superalloy K418 and 42CrMo steel by a high power CWNd : YAG laser
文献类型：期刊论文
| 作者 | Liu XB(刘秀波) ; Yu G(虞钢); Pang M(庞铭); Fan JW; Wang HH(王恒海); Zheng CY(郑彩云)
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| 刊名 | Applied Surface Science
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| 出版日期 | 2007 |
| 卷号 | 253期号:17页码:7281-7289 |
| 通讯作者邮箱 | gyu@imech.ac.cn |
| ISSN号 | 0169-4332 |
| 关键词 | Laser Processing Metals And Alloys Full Penetration Welding Microstructure Mechanical Properties Tensile Properties Aluminum-Alloys Joints |
| 通讯作者 | Yu, G (reprint author), Chinese Acad Sci, Inst Mech, Lab Laser Intelligent Mfg, 15 Beisihuanxi Rd, Beijing 100080, Peoples R China. |
| 中文摘要 | Experiments of autogenous laser full penetration welding between dissimilar cast Ni-based superalloy K418 and alloy steel 42CrMo flat plates with 3.5 mm thickness were conducted using a 3 kW continuous wave (CW) Nd:YAG laser. The influences of laser welding velocity, flow rate of side-blow shielding gas, defocusing distance were investigated. Microstructure of the welded seam was characterized by optical microscopy (OM), scanning electron microscopy (SEM) and X-ray diffraction (XRD) and energy dispersive spectrometer (EDS). Mechanical properties of the welded seam were evaluated by microhardness and tensile strength testing. Results show that high quality full penetration laser-welded joint can be obtained by optimizing the welding velocity, flow rate of shielding gas and defocusing distance. The laser-welded seam have non-equilibrium solidified microstructures consisting of gamma-FeCr0.29Ni0.16C0.06 austenite solid solution dendrites as the dominant and very small amount of super-fine dispersed Ni3Al gamma' phase and Laves particles as well as MC needle-like carbides distributed in the interdendritic regions. Although the microhardness of the laser-welded seam was lower than that of the base metal, the strength of the joint was equal to that of the base metal and the fracture mechanism showed fine ductility. (c) 2007 Elsevier B.V. All rights reserved. |
| 类目[WOS] | Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter |
| 研究领域[WOS] | Chemistry ; Materials Science ; Physics |
| 关键词[WOS] | TENSILE PROPERTIES ; ALUMINUM-ALLOYS ; JOINTS |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000247867700050 |
| 公开日期 | 2009-08-03 ; 2010-06-13 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/33945]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Liu XB,Yu G,Pang M,et al. Dissimilar autogenous full penetration welding of superalloy K418 and 42CrMo steel by a high power CWNd : YAG laser[J]. Applied Surface Science,2007,253(17):7281-7289. |
| APA | 刘秀波,虞钢,庞铭,Fan JW,王恒海,&郑彩云.(2007).Dissimilar autogenous full penetration welding of superalloy K418 and 42CrMo steel by a high power CWNd : YAG laser.Applied Surface Science,253(17),7281-7289. |
| MLA | 刘秀波,et al."Dissimilar autogenous full penetration welding of superalloy K418 and 42CrMo steel by a high power CWNd : YAG laser".Applied Surface Science 253.17(2007):7281-7289. |
入库方式： OAI收割
来源：力学研究所
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